Using C1COCCN1, CC(C)N1CCN(c2nc3ccc(C=O)cc3s2)CC1 to produce CC(C)N1CCN(c2nc3ccc(CN4CCOCC4)cc3s2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.