You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance N-[3-[2-[[3-cyano-4-(4-methylphenyl)thiophen-2-yl]amino]-2-oxoethyl]sulfanylphenyl]butanamide .
user
C24H23N3O2S2
assistant