C=C1C(=O)O[C@H]2C/C(C)=C/CCC3(C)OC3CC/C(CO)=C/C[C@H]12	(1R,3Z,12E,15S)-4-(hydroxymethyl)-9,13-dimethyl-18-methylidene-8,16-dioxatricyclo[13.3.0.07,9]octadeca-3,12-dien-17-one