You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(3R,3'R,4'S,5'R)-5'-[2-[benzyl(2-hydroxyethyl)amino]-2-oxoethyl]-4'-[fluoro(dimethyl)silyl]-1,3'-dimethyl-2-oxospiro[indole-3,2'-oxolane]-5-yl]benzamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C33H38FN3O5Si
assistant