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 (2S,3S,10bS)-3-acetyl-2-(4-propan-2-yloxyphenyl)-3,10b-dihydro-2H-pyrrolo[2,1-a]isoquinoline-1,1-dicarbonitrile into molecular formula.
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C25H23N3O2
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