You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
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For the molecule named 2-[(1R,3R,4R)-4,5,6,9,10-pentahydroxy-1-methyl-7-[(11R,15S,17R)-17-methyl-2,4,7,9,13-pentaoxo-12,16-dioxatetracyclo[8.7.0.03,8.011,15]heptadeca-1(10),3(8),5-trien-6-yl]-3,4-dihydro-1H-benzo[g]isochromen-3-yl]acetic acid by IUPAC nomenclature, provide its molecular formula.
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C32H24O15
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