You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
methyl (2Z,5S)-5-(4-chlorophenyl)-7-methyl-3-oxo-2-[(4-propan-2-ylphenyl)methylidene]-5H-[1,3]thiazolo[3,2-a]pyrimidine-6-carboxylate is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H23ClN2O3S
assistant