You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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Under IUPAC nomenclature, a molecule named (4S,4'R,6R,12'bS)-9'-methoxy-3',4,6-trimethylspiro[1,3-dioxane-2,7'-2,4,5,6,7a,13-hexahydro-1H-4,12-methanobenzofuro[3,2-e]isoquinoline]-4'a-ol is given. What is its corresponding molecular formula?
user
C23H31NO5
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