1,1-cyclopropanedicarboxylic acid, 2-methyl-3-[(1E)-1-propenyl]-, dimethyl ester, (2R,3S)- InChI=1/C11H16O4/c1-5-6-8-7(2)11(8,9(12)14-3)10(13)15-4/h5-8H,1-4H3/b6-5+/t7-,8+/m1/s dimethyl rel-(2R,3S)-2-methyl-3-[(1E)-prop-1-en-1-yl]cyclopropane-1,1-dicarboxylate