You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-(5-acetyl-4-phenyl-1,3-thiazol-2-yl)-1-(2-nitrophenyl)piperidine-4-carboxamide by IUPAC nomenclature, provide its molecular formula.
user
C23H22N4O4S
assistant