You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named ethyl 2-[[(4S)-4-thiophen-2-yl-4,6-dihydropyrrolo[1,2-a][1,4]benzodiazepine-5-carbonyl]amino]benzoate by IUPAC nomenclature, provide its molecular formula.
user
C26H23N3O3S
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