SMILES: C1=CC=C2C(=C1)C(=C[NH+]2)C[C@H](C(=O)O)N
Description: The molecule is a tryptophanyl radical cation. It derives from a D-tryptophan. It is a conjugate acid of a D-tryptophanyl radical. It is an enantiomer of a L-tryptophanyl radical cation.