You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-amino-1'-[(3,4-dichlorophenyl)methyl]-2'-oxo-3-propylspiro[2H-pyrano[2,3-c]pyrazole-4,3'-indole]-5-carbonitrile The above is the IUPAC name of a molecule. Write its molecular formula.
user
C24H19Cl2N5O2
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