You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
7-methyl-3-(oxolan-2-ylmethyl)-2-(3,3,3-trifluoropropylsulfanyl)-5,6,7,8-tetrahydro-[1]benzothiolo[2,3-d]pyrimidin-4-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H23F3N2O2S2
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