You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name N-[4-amino-2-[2-[2-chloro-5-(trifluoromethyl)anilino]-2-oxoethyl]sulfanyl-6-oxo-1H-pyrimidin-5-yl]-4-methylbenzamide ?
user
C21H17ClF3N5O3S
assistant