You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
4-[(4-methyl-1,3-thiazol-2-yl)sulfanyl]-3-nitro-N-(2-oxoazepan-3-yl)benzamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C17H18N4O4S2
assistant