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-cyclopentyl-3-[(6,7-dimethoxy-1-phenyl-3,4-dihydro-1H-isoquinolin-2-yl)methyl]imidazolidine-2,4,5-trione into molecular formula.
user
C26H29N3O5
assistant