CC(=O)N[C@@H](Cc1ccc(C(C([O-])=O)C([O-])=O)c(C([O-])=O)c1)C(=O)N[C@H]4CCCCN(Cc3ccc(c2ccccc2)cc3)C4=O 852_300_1O44 1.757 198.889 46 626.642 12 2 2 12 551.189