Showing structure for 1-methyl 20-(3,7,11,15-tetramethylhexadeca-2,6,10,14-tetraen-1-yl) (6e,8e,10e,12e,14e,16e,18e)-4,8,13,17-tetramethylicosa-2,4,6,8,10,12,14,16,18-nonaenedioate