You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 3-O-ethyl 5-O-methyl (4R)-2-[2-(2-aminoethoxy)ethoxymethyl]-4-(2,3-dichlorophenyl)-6-(methoxymethyl)-1,4-dihydropyridine-3,5-dicarboxylate by IUPAC nomenclature, provide its molecular formula.
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C23H30Cl2N2O7
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