SMILES: C[C@H](C(=O)N[C@H](C)C(=O)[O-])[NH3+]
Description: The molecule is a dipeptide zwitterion that is the zwitterionic form of D-alanyl-D-alanine arising from migration of a proton from the OH of the carboxy terminus to the amino terminus. It has a role as an Escherichia coli metabolite. It is a tautomer of a D-alanyl-D-alanine.