You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule (4S)-N-[(2,4-difluorophenyl)methyl]-6-ethyl-9-methoxy-2-methyl-7,10-dioxo-6,12-diazatricyclo[6.3.1.04,12]dodeca-1(11),8-diene-11-carboxamide into molecular formula.
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C22H23F2N3O4
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