You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[5-(4-chlorophenyl)-4-oxo-3-phenylthieno[2,3-d]pyrimidin-2-yl]sulfanyl-N-[[(2S)-oxolan-2-yl]methyl]acetamide by IUPAC nomenclature, provide its molecular formula.
user
C25H22ClN3O3S2
assistant