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 (4S)-4-[4-[(2-chlorophenyl)methoxy]-3-ethoxyphenyl]-6-phenyl-2-sulfanylidene-3,4-dihydro-1H-pyrimidine-5-carboxylate by IUPAC nomenclature, provide its molecular formula.
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C28H27ClN2O4S
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