You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3R,5aR,8aS,8bR)-3-[(Z)-4-[5-(hydroxymethyl)furan-2-yl]-3-pyridin-2-ylbut-3-enyl]-7-phenyl-4-propan-2-yl-1,3,5,5a,8a,8b-hexahydrofuro[3,4-e]isoindole-6,8-dione is the IUPAC name of a molecule. Please give its molecular formula.
user
C33H34N2O5
assistant