4-[[3-[[(3-carboxy-1-oxoallyl)amino]methyl]-3,5,5-trimethylcyclohexyl]amino]-4-oxo-2-butenoic acid

4-[[3-[[(3-Carboxy-1-oxo-2-propenyl)amino]methyl]-3,5,5-trimethylcyclohexyl]amino]-4-oxo-2-butenoic acid