You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 4-[1-(cyclopentanecarbonyl)piperidin-4-yl]-N-(diaminomethylidene)-3-(trifluoromethyl)benzamide;formic acid into molecular formula.
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C21H27F3N4O4
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