[NH3+][C@@H](CCC(=O)N[C@@H](CS[C@@H](CC([O-])=O)C([O-])=O)C(=O)NCC([O-])=O)C([O-])=O TGG_351_2F2K -5.305 246.35 28 420.376 13 5 1 14 337.149