InChI=1/C7H12O2/c1-3-9-7(8)6-4-5(6)2/h5-6H,3-4H2,1-2H3/t5-,6-/m0/s cyclopropanecarboxylic acid, 2-methyl-, ethyl ester, (1S,2S)- ethyl (1S,2S)-2-methylcyclopropanecarboxylate