You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[3-chloro-5-methoxy-4-(2-phenoxyethoxy)phenyl]-7-methyl-5,6,7,8-tetrahydro-3H-[1]benzothiolo[2,3-d]pyrimidin-4-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C26H25ClN2O4S
assistant