You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (5,5-dimethyloxolan-2-yl)-[6-(trifluoromethyl)-2,3-dihydro-1,4-benzoxazin-4-yl]methanone .
user
C16H18F3NO3
assistant