SMILES: C[C@H]([C@H]1C(=O)NCC[C@@H](C(=O)N[C@H](C(=O)N[C@@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N[C@H](C(=O)N1)CCNCS(=O)(=O)[O-])CCNCS(=O)(=O)[O-])CC(C)C)CC(C)C)CCNCS(=O)(=O)[O-])NC(=O)[C@H](CCNCS(=O)(=O)[O-])NC(=O)[C@H]([C@@H](C)O)NC(=O)[C@H](CCNCS(=O)(=O)[O-])NC(=O)CCCCC(C)C)O
Description: The molecule is the penta-anion resulting from the removal of protons from each of the sulfonic acid groups of colistimethate B. It is a conjugate base of a colistimethate B.