You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R)-2-[(1R)-1-[3,5-bis(trifluoromethyl)phenyl]ethoxy]-1-(4-fluorophenyl)-7-[4-(1H-pyrazol-5-yl)phenyl]-2,3,8,8a-tetrahydro-1H-indolizin-5-one is the IUPAC name of a molecule. Please give its molecular formula.
user
C33H26F7N3O2
assistant