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-(4-ethoxyphenyl)-4-phenyl-4,6-dihydropyrrolo[1,2-a][1,4]benzodiazepine-5-carboxamide into molecular formula.
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C27H25N3O2
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