You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[(E)-2-(3-nitro-4-pyrimidin-2-ylsulfanylphenyl)ethenyl]-5,6,7,8-tetrahydro-3H-[1]benzothiolo[2,3-d]pyrimidin-4-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C22H17N5O3S2
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