You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule methyl N-[[3,5-dibromo-2-[[5-bromo-2-(3-chloro-3,4-dihydropyridin-2-yl)pyrazole-3-carbonyl]amino]benzoyl]-prop-2-ynylamino]carbamate .
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C21H16Br3ClN6O4
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