SMILES: C[N+](C)(C)[C@@H](CC1=C[NH+]=C(N1)S)C(=O)[O-]
Description: The molecule is an alpha-amino-acid cation obtained by protonation of the imidazole ring of ergothioneine. It is the major microspecies at pH 7.3 (according to Marvin v 6.2.0.). It is a conjugate acid of an ergothioneine.