You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[2-(cyclopropanecarbonyl)-1-(3-methylphenyl)-3,4-dihydro-1H-isoquinolin-7-yl]oxy]-N-(3-methylbutyl)acetamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C27H34N2O3
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