SMILES: CCCCCCCCCCCCCC(=O)O[C@H](CCCCCCCCCCC)CC(=O)O[C@@H]1[C@H]([C@@H](O[C@@H]([C@H]1OP(=O)([O-])OP(=O)([O-])OCC[NH3+])CO)OC[C@@H]2[C@H]([C@@H]([C@H]([C@H](O2)OP(=O)([O-])[O-])NC(=O)C[C@@H](CCCCCCCCCCC)O)OC(=O)C[C@@H](CCCCCCCCCCC)O)O)NC(=O)C[C@@H](CCCCCCCCCCC)OC(=O)CCCCCCCCCCC
Description: The molecule is a lipid A oxoanion arising from deprotonation of the phosphate OH groups and protonation of the amino group of lipid A 4'-(2-aminoethyl diphosphate); major species at pH 7.3. It is a conjugate base of a lipid A 4'-(2-aminoethyl diphosphate).