You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[(1R)-1-[(1R)-6,7-dimethoxy-2-[(4-methoxyphenyl)methyl]-3,4-dihydro-1H-isoquinolin-1-yl]ethyl]-3-methoxybenzamide by IUPAC nomenclature, provide its molecular formula.
user
C29H34N2O5
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