You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[8-hydroxy-4a-(3-methoxyphenyl)-2-prop-2-enyl-1,3,4,5,6,7,8,8a-octahydroisoquinolin-6-yl]-N-methylbenzamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H34N2O3
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