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