(2E,4E,6E,8E,10E,12E,14E,16E,18E,20E)-2,6,10,15,19-Pentamethyl-21-(2,6,6-trimethyl-1-cyclohexen-1-yl)-2,4,6,8,10,12,14,16,18,20-heneicosadecaenoic acid|化工社