You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-(aminomethylidene)-4-(2-chlorophenyl)-N-cyclohexa-2,5-dien-1-ylidene-2-methyl-6-sulfanylidene-4H-pyridin-1-ide-3-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C20H16ClN3OS
assistant