You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
ethyl 4-[[6,7-dimethoxy-2-(2-phenoxypropanoyl)-3,4-dihydro-1H-isoquinolin-1-yl]methoxy]benzoate is the IUPAC name of a molecule. Please give its molecular formula.
user
C30H33NO7
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