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 1-[(3,4-difluorophenyl)methyl]-N-[3-[3-(2-methylprop-1-enyl)quinoxalin-6-yl]prop-2-ynyl]-6-oxopyrimidine-5-carboxamide .
user
C27H21F2N5O2
assistant