You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-(3-chloro-4-fluorophenyl)-2-[(6-methyl-4-oxo-3,5-dihydropyrrolo[3,2-d]pyrimidin-2-yl)sulfanyl]acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H12ClFN4O2S
assistant