You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 2'-amino-1'-(4-chlorophenyl)-5-methyl-2,5'-dioxospiro[1H-indole-3,4'-7,8-dihydro-6H-quinoline]-3'-carbonitrile into its molecular formula.
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C24H19ClN4O2
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