2,3-HEXADIENOIC ACID,2-ETHYL,METHYL ESTER 2,3-hexadienoic acid, 2-ethyl-, methyl ester InChI=1/C9H14O2/c1-4-6-7-8(5-2)9(10)11-3/h6H,4-5H2,1-3H methyl 2-ethylhexa-2,3-dienoate