Using CS[C@H]1O[C@@H](c2ccc(C)c(Cc3ccc(CCCCN)cc3)c2)[C@H](OC(C)=O)[C@@H](OC(C)=O)[C@@H]1OC(C)=O, CC(C)(CO)C(=O)O to produce CS[C@H]1O[C@@H](c2ccc(C)c(Cc3ccc(CCCCNC(=O)C(C)(C)CO)cc3)c2)[C@H](O)[C@@H](O)[C@@H]1O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.