Showing structure for 4,6,6-trimethyl-5-[(9e,11e,13e,15e,17e)-3,7,12,16-tetramethyl-18-(2,6,6-trimethyl-5-oxocyclohexa-1,3-dien-1-yl)octadeca-1,3,5,7,9,11,13,15,17-nonaen-1-yl]cyclohexa-2,4-dien-1-one