You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[1-[2-[[C-[(Z)-2-aminoethenyl]-N-methylcarbonimidoyl]amino]-5-chloropyrimidin-4-yl]-3-methylindol-5-yl]prop-2-enamide by IUPAC nomenclature, provide its molecular formula.
user
C20H20ClN7O
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