You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-isoquinolin-1-yl-5-[(2R)-1-[(3,4,5-trimethoxyphenyl)methyl]pyrrolidin-2-yl]-1,3,4-oxadiazole The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H26N4O4
assistant