function solve (params) {
  let str = '!###Anna@pur@na##=16<<tv5dekdz8x11ddkc'
  let regex = /([A-Za-z\d!@#$?]+)=(\d+)<<(.+)/

  let match = str.match(regex)
  let name = match[1]
  let regexName = /[A-Za-z]/g
  name = name.match(regexName).join('')
  name

}