You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Name the molecular formula for the molecule established as 2-methyl-N-[3-[[[(E)-3-[4-(trifluoromethyl)phenyl]prop-2-enoyl]amino]methyl]phenyl]propanamide using the IUPAC nomenclature.
user
C21H21F3N2O2
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