You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[1-[(2,5-dimethoxyphenyl)methyl]-5,8-dimethoxy-3,4-dihydro-1H-isoquinolin-2-yl]-N-(pyridin-2-ylmethyl)acetamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H33N3O5
assistant