PQ9 5-[(2E,6E,10E,14E,18E,22E)-3,7,11,15,19,23,27-HEPTAMETHYLOCTACOSA-2,6,10,14,18,22,26-HEPTAENYL]-2,3-DIMETHYLBENZO-1,4-QUINONE CC1=C(C(=O)C(=CC1=O)CC=C(/C)CCC=C(/C)CCC=C(/C)CCC=C(/C)CCC=C(/C)CCC=C(/C)CCC=C(C)C)C