InChI=1/C7H14O3/c1-4-10-7(9)5(2)6(3)8/h5-6,8H,4H2,1-3H3/t5-,6+/m1/s butanoic acid, 3-hydroxy-2-methyl-, ethyl ester, (2R,3S)- ethyl (2R,3S)-3-hydroxy-2-methylbutanoate