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Under IUPAC nomenclature, a molecule named ethyl 5-[[(2S,3R)-1-[(E)-3-(2-chlorophenyl)prop-2-enoyl]-3-phenylpyrrolidine-2-carbonyl]amino]-1H-indole-2-carboxylate is given. What is its corresponding molecular formula?
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C31H28ClN3O4
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