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 methyl 2-(4-cyanophenyl)imino-2-(2-fluoro-3,5-dimethoxyphenyl)-N-methoxycarbonylethanimidothioate .
user
C20H18FN3O4S
assistant