You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (E)-1,3-dichloroprop-1-ene;1-methyl-N-pyridin-2-ylindazole-3-carboxamide;prop-1-ene by IUPAC nomenclature, provide its molecular formula.
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C20H22Cl2N4O
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