You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(4-fluorophenyl)-2-[[3-(3-fluorophenyl)-1,2,4-oxadiazol-5-yl]methylsulfanyl]-6-methyl-5H-pyrrolo[3,2-d]pyrimidin-4-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H15F2N5O2S
assistant