SMILES: CC[C@@H](C)[C@H]1C(=O)N/C=C/S[C@H](C2C(=O)NC(=C)C(=O)N[C@H](C(=O)N[C@@H](CS[C@H]([C@H](C(=O)N[C@H](C(=O)N2)CC(C)C)NC(=O)[C@@H]3CS[C@H]([C@H](C(=O)N[C@H](C(=O)N4CCC[C@H]4C(=O)NCC(=O)NCC(=O)NCC(=O)NCC(=O)N[C@H](C(=O)N3)C(C)C)CC(C)C)NC(=O)[C@H](CC5=CC=CC=C5)NC(=O)[C@H]6[C@@H](SC[C@@H](C(=O)N6)[NH3+])C)C)C)C(=O)N1)CCC(=O)[O-])C
Description: The molecule is a peptide zwitterion obtained by transfer of a proton from the carboxy to the amino terminus of mersacidin. Major species at pH 7.3. It is a tautomer of a mersacidin.