You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named N-[(4R,4aS,7R,7aR,12bS)-4a,9-dihydroxy-3-prop-2-enyl-1,2,4,5,6,7,7a,13-octahydro-4,12-methanobenzofuro[3,2-e]isoquinolin-7-yl]-2-(3,4-dichlorophenyl)-N-ethylacetamide by IUPAC nomenclature, provide its molecular formula.
user
C29H32Cl2N2O4
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