You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name 11a-methyl-2,3a,3b,4,5,9b,10,11-octahydro-1H-naphtho[1,2-g][1]benzofuran-1,7-diol into its molecular formula.
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C17H22O3
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