SMILES: C[N+](C)(C)[C@@H](CCC1=NC=C(N1)C[C@@H](C(=O)[O-])[NH3+])C(=O)N
Description: The molecule is a zwitterionic tautomer of diphthamide having an anionic carboxy group and a protonated primary amino group. It is a tautomer of a diphthamide.