You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (3R,3'S,5'S)-5'-[2-[4-[(R)-hydroxy(phenyl)methyl]triazol-1-yl]ethyl]-3'-methyl-1-[[4-(2-oxoazetidin-1-yl)phenyl]methyl]spiro[indole-3,2'-oxolane]-2-one by IUPAC nomenclature, provide its molecular formula.
user
C33H33N5O4
assistant