IMPPAT Phytochemical information: 
(1R,2S,4S,5'R,6R,7S,8R,9S,12S,13S,15S,16R,18R)-5',7,9,13-tetramethylspiro[5-oxapentacyclo[10.8.0.02,9.04,8.013,18]icosane-6,2'-oxane]-15,16-diol