5,5a,10-trihydroxy-4a-(hydroxymethyl)-7,9-dimethyl-2-phenyl-10a-(prop-1-en-2-yl)-3a,3b,3c,4a,5,5a,8a,9,10,10a-decahydro-6H-2,8b-epoxyoxireno[6,7]azuleno[5,4-e][1,3]benzodioxol-6-one