You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (7S)-2-[2-(4-bromophenyl)-2-oxoethyl]sulfanyl-7-methyl-3-phenyl-5,6,7,8-tetrahydro-[1]benzothiolo[2,3-d]pyrimidin-4-one .
user
C25H21BrN2O2S2
assistant