4α,6α-Dihy-droxy-1β-methyl-sulfonyl-8α,9α-ep-oxy-2β,12-epoxymethano-β-dihydro-agarofuran.

4α,6α-Dihy-droxy-1β-methyl-sulfonyl-8α,9α-ep-oxy-2β,12-epoxymethano-β-dihydro-agarofuran.