You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(4R,4aS,7aR,12bS)-4a-hydroxy-9-methoxy-3-methyl-2,4,7a,13-tetrahydro-1H-4,12-methanobenzofuro[3,2-e]isoquinolin-7-one;(E)-3-phenylprop-2-enoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H27NO6
assistant