You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named (E)-N-[2-[(4aS,8aR)-3,4,4a,5,6,7,8,8a-octahydro-1H-isoquinolin-2-yl]-5-(trifluoromethyl)phenyl]-3-phenylprop-2-enamide by IUPAC nomenclature, provide its molecular formula.
user
C25H27F3N2O
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