minecraft 'BANG snowball!!!!!' only one command

/summon MinecartCommandBlock ~ ~1 ~ {Command:kill @e[type=MinecartCommandBlock,r=1],Riding:{id:MinecartCommandBlock,Command:setblock ~ ~-1 ~1 redstone_block,Riding:{id:MinecartCommandBlock,Command:setblock ~ ~ ~1 command_block 0 replace {Command:fill ~ ~-3 ~-1 ~ ~ ~ air},Riding:{id:MinecartCommandBlock,Command:"scoreboard objectives add OoFN8_I dummy",Riding:{id:MinecartCommandBlock,Command:setblock ~3 ~-1 ~ redstone_block,Riding:{id:MinecartCommandBlock,Command:setblock ~3 ~-1 ~-1 command_block 0 replace {Command:fill ~ ~ ~1 ~5 ~ ~1 stone},Riding:{id:MinecartCommandBlock,Command:setblock ~3 ~-1 ~1 command_block 0 replace {Command:fill ~ ~ ~-1 ~5 ~ ~-1 redstone_block},Riding:{id:MinecartCommandBlock,Command:setblock ~4 ~-1 ~-1 command_block 0 replace {Command:"/execute @e[type=Snowball] ~ ~ ~ /particle lava ~ ~ ~ 0 0 0 0.05 100 "},Riding:{id:MinecartCommandBlock,Command:setblock ~4 ~-1 ~1 command_block 0 replace {Command:"/execute @e[type=Snowball] ~ ~ ~ summon PrimedTnt ~ ~ ~ {Fuse:0}"},Riding:{id:MinecartCommandBlock,Command:setblock ~5 ~-1 ~-1 command_block 0 replace {Command:"/execute @e[type=Snowball] ~ ~ ~ summon LightningBolt ~ ~ ~ {Fuse:0}"},Riding:{id:MinecartCommandBlock,Command:setblock ~5 ~-1 ~1 command_block 0 replace {Command:"effect @a 11 10000 12"},Riding:{id:MinecartCommandBlock,Command:setblock ~6 ~-1 ~-1 command_block 0 replace {Command:"effect @a 21 10000 12"},Riding:{id:MinecartCommandBlock,Command:setblock ~6 ~-1 ~1 command_block 0 replace {Command:"scoreboard players set @e[type=Item] OoFN8_I 1 {Item:{id:\\\"minecraft:grass\\\"},OnGround:1b}"},Riding:{id:MinecartCommandBlock,Command:setblock ~7 ~-1 ~-1 command_block 0 replace {Command:"scoreboard players set @e[type=Item] OoFN8_I 2 {Item:{id:\\\"minecraft:egg\\\"},OnGround:1b}"},Riding:{id:MinecartCommandBlock,Command:setblock ~7 ~-1 ~1 command_block 0 replace {Command:"execute @e[score_OoFN8_I_min=1,score_OoFN8_I=1] ~ ~ ~ execute @e[r=0,score_OoFN8_I_min=2,score_OoFN8_I=2] ~ ~ ~ summon Item ~ ~ ~ {Item:{id:\\\"minecraft:snowball\\\",Count:1,tag:{HideFlags:1,ench:[],display:{Name:Fire Magic ball,Lore:[불의 마법이다.[좌클릭시 일정확률로 두방에 죽는다.]]} }}}"},Riding:{id:MinecartCommandBlock,Command:setblock ~8 ~-1 ~-1 command_block 0 replace {Command:"execute @e[score_OoFN8_I_min=1,score_OoFN8_I=1] ~ ~ ~ execute @e[r=0,score_OoFN8_I_min=2,score_OoFN8_I=2] ~ ~ ~ kill @e[type=Item,score_OoFN8_I_min=1,score_OoFN8_I=2,r=3]"},Riding:{id:MinecartCommandBlock,Command:setblock ~1 ~-1 ~ wall_sign 4 replace {Text1:"{text:\\\"\\\",clickEvent:{action:\\\"run_command\\\",value:\\\"/give @a minecraft:grass 1 0\\\"}}",Text2:"{text:\\\"[Get items]\\\",color:gold,clickEvent:{action:\\\"run_command\\\",value:\\\"/give @a minecraft:egg 1 0 \\\"},bold:true}",Text3:"{text:\\\"right-click\\\",color:black}"},Riding:{id:MinecartCommandBlock,Command:setblock ~1 ~-2 ~ wall_sign 4 replace {Text2:"{text:\\\"[Destroy]\\\",color:red,bold:true}",Text3:"{text:\\\"right-click\\\",color:black}",Text4:"{text:\\\"\\\",clickEvent:{action:\\\"run_command\\\",value:\\\"fill ~ ~-1 ~-2 ~9 ~2 ~2 air\\\"}}"},Riding:{id:MinecartCommandBlock,Command:fill ~2 ~-1 ~-2 ~9 ~-1 ~2 stained_glass 0 replace lapis_block 0,Riding:{id:MinecartCommandBlock,Command:fill ~2 ~-2 ~-2 ~9 ~ ~2 lapis_block 0 hollow,Riding:{id:MinecartCommandBlock,Command:gamerule commandBlockOutput false,Riding:{id:MinecartCommandBlock,Riding:{id:FallingSand,Block:activator_rail,Time:1,Riding:{id:FallingSand,Block:redstone_block,Time:1,Riding:{id:FallingSand,Block:stone,Time:1}}}}}}}}}}}}}}}}}}}}}}}}}