(2E)-3-(5-(2,3-Dimethoxy-6-methyl-1,4-benzoquinoyl))-2-nonyl-2-propenoic acid 136164-66-4 E 3330 E-3330 E3330 Undecanoic acid, 2-((4,5-dimethoxy-2-methyl-3,6-dioxo-1,4-cyclohexadien-1-yl)methylene)-, (E)-