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 (4S)-9-[2-[(3R)-3-hydroxy-1-methyl-2-oxopyrrolidin-3-yl]ethynyl]-4-methyl-3-(trifluoromethyl)-4,5-dihydropyrazolo[5,1-d][1,5]benzoxazepine-2-carboxamide using the IUPAC nomenclature.
user
C21H19F3N4O4
assistant