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 4-acetyl-N-[1-[3-(trifluoromethyl)phenyl]ethyl]-2,3-dihydro-1,4-benzoxazine-2-carboxamide using the IUPAC nomenclature.
user
C20H19F3N2O3
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