You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule [(4R,4aS,7S,7aR,12bS)-7-[2-methylpropyl(3-phenylprop-2-ynoyl)amino]-3-prop-2-enyl-1,2,4,5,6,7,7a,13-octahydro-4,12-methanobenzofuro[3,2-e]isoquinolin-4a-yl] acetate into molecular formula.
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C34H38N2O4
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