Echinaxanthol

(1S,6β)-1β-Methyl-4β-(1-methylethyl)-7β-(3-oxobutyl)bicyclo[4.1.0]heptane-3β,5β-diol

4-[(1S,6β)-3β,5β-Dihydroxy-1β-methyl-4β-(1-methylethyl)bicyclo[4.1.0]hept-7β-yl]-2-butanone