You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-(2,5-diiodo-4-methoxyphenoxy)but-2-enenitrile;5-(2,5-diiodo-4-methoxyphenoxy)pyrimidine-2,4-diamine is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H19I4N5O4
assistant