You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(3aR,6aR)-2,3,3a,4,6,6a-hexahydro-1H-pyrrolo[2,3-c]pyrrol-5-yl]-[4-(3,4-dihydro-1H-isoquinolin-2-ylmethyl)phenyl]methanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C23H27N3O
assistant