Showing structure for 4-[(9e,11e,13e,15e)-18-(4-hydroxy-2,6,6-trimethylcyclohex-1-en-1-yl)-3,7,12,16-tetramethyloctadeca-3,5,7,9,11,13,15-heptaen-1,17-diyn-1-yl]-3,5,5-trimethylcyclohex-3-en-1-ol