(2R,3S)-2,3-dimethylmalate <=> propanoate + pyruvate
(2r,3s)-2,3-dimethylmalate <=> propanoate + pyruvate
(2R,3S)-2,3-dimethylmalate <=> propanoate + pyruvate
(2r,3s)-2,3-dimethylmalate <=> propanoate + pyruvate