CC1(O)CCC(O)(C(C)(C)O)CC2(C)C(O)CCC12 (1R,3aR,4R,8aS)-7-(2-hydroxypropan-2-yl)-4,8a-dimethyl-2,3,3a,5,6,8-hexahydro-1H-azulene-1,4,7-triol