You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-[(4S,4aS,7aS)-4-methoxy-6-(2-methoxyethyl)-3,4,4a,5,7,7a-hexahydro-2H-pyrrolo[3,4-b]pyridin-1-yl]-2-phenylethanone;2,2,2-trifluoroacetic acid into molecular formula.
user
C21H29F3N2O5
assistant