4-pentenoic acid, 2-methoxy-3-methyl-, methyl ester, (2S,3S)- InChI=1/C8H14O3/c1-5-6(2)7(10-3)8(9)11-4/h5-7H,1H2,2-4H3/t6-,7-/m0/s methyl (2S,3S)-2-methoxy-3-methylpent-4-enoate