You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(2-chlorophenyl)-N-(4-chlorophenyl)-6,7-dimethoxy-3a,4-dihydro-3H-indeno[1,2-c]pyrazole-2-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H21Cl2N3O3
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