You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (E)-3-(1,3-benzodioxol-5-yl)-1-[(1S)-6,7-dimethoxy-1-phenyl-3,4-dihydro-1H-isoquinolin-2-yl]prop-2-en-1-one by IUPAC nomenclature, provide its molecular formula.
user
C27H25NO5
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