Showing structure for 6-[(9e,11e,13e,15e)-18-(4-hydroxy-2,6,6-trimethylcyclohex-1-en-1-yl)-3,7,12,16-tetramethyloctadeca-1,3,5,7,9,11,13,15-octaen-17-yn-1-ylidene]-1,5,5-trimethylcyclohexane-1,3-diol