SMILES: C(C[C@@H](C(=O)O)NC(=O)C[C@@H](C(=O)O)N)CN=C(N)N
Description: The molecule is a dipeptide consisting of an L-aspartyl residue attached to L-arginine via the beta-carboxy group. It is a tautomer of a beta-Asp-Arg zwitterion.