You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule (3R)-N-[3-(3,4-dihydro-1H-isoquinolin-2-yl)propyl]-1-(4-ethylphenyl)-2-oxopyrrolidine-3-carboxamide .
user
C25H31N3O2
assistant