Using C1CCNC1, CC(C)N1CC[C@H](Oc2ccc3[nH]c(C(=O)O)cc3c2)C1 to produce CC(C)N1CC[C@H](Oc2ccc3[nH]c(C(=O)N4CCCC4)cc3c2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.