(E)-4-(1,5-Dimethyl-3-oxo-1-hexenyl)benzoic acid 4-[(1E)-1,5-dimethyl-3-oxohex-1-en-1-yl]benzoic acid InChI=1/C15H18O3/c1-10(2)8-14(16)9-11(3)12-4-6-13(7-5-12)15(17)18/h4-7,9-10H,8H2,1-3H3,(H,17,18)/b11-9 benzoic acid, 4-[(1E)-1,5-dimethyl-3-oxo-1-hexenyl]-