2,3-PENTADIENOIC ACID,2-ETHYL,METHYL ESTER 2,3-pentadienoic acid, 2-ethyl-, methyl ester InChI=1/C8H12O2/c1-4-6-7(5-2)8(9)10-3/h4H,5H2,1-3H methyl 2-ethylpenta-2,3-dienoate