excel function that doesnt work because I have no idea



=IF(max(B6,D6)<63,if(E6>550,if(D6>B6,A6,C6)),if(and(max(B6,D6)>=63,max(B6,D6)<68),if(E6>600,if(D6>B6,A6,C6),if(and(max(B6,D6)>=68,max(B6,D6)<73),if(E6>630,if(D6>B6,A6,C6),if(and(max(B6,D6)>=73,max(B6,D6)<77.5),if(E6>660,if(D6>B6,A6,C6),if(and(max(B6,D6)>=77.5),max(B6,D6)<81),if(E6>700,if(D6>B6,A6,C6),if(and(max(B6,D6)>=81,max(B6,D6)<85.5),if(E6>730,if(D6>B6,A6,C6),if(and(max(B6,D6)>=85.5,max(B6,D6)<90),if(E6>770,if(D6>B6,A6,C6),if(and(max(B6,D6)>=90,max(B6,D6)<94),if(E6>800,if(D6>B6,A6,C6),if(max(B6,D6)>=94,if(E6>950,if(D6>B6,A6,C6)))))))))))))))),"uh oh")