You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Convert the IUPAC name of a molecule ethyl 2'-amino-5-chloro-1'-(2-chloro-4-methylphenyl)-2,5'-dioxospiro[1H-indole-3,4'-7,8-dihydro-6H-quinoline]-3'-carboxylate into molecular formula.
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C26H23Cl2N3O4
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