You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by N-(4-isocyanophenyl)-N-(trifluoromethoxy)acetamide;N-[4-isocyano-2-(trifluoromethoxy)phenyl]acetamide;nitromethane ?
user
C21H17F6N5O6
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