You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Translate the chemical IUPAC name (4-chlorophenyl) 6-chloro-1-[4-(methanesulfonamido)phenyl]-1,3,4,9-tetrahydropyrido[3,4-b]indole-2-carboxylate into its molecular formula.
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C25H21Cl2N3O4S
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