You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named (3R,12bS)-9-hydroxy-3-methyl-3-(oxolan-2-ylmethyl)-4a-(3-phenylpropoxy)-2,4,5,6,7a,13-hexahydro-1H-4,12-methanobenzofuro[3,2-e]isoquinolin-3-ium-7-one is given. What is its corresponding molecular formula?
user
C31H38NO5+
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