Using CC(=O)O, CC(C)(C)CCNc1cc(N[C@@H]2CCNC2)ncn1 to produce CN1CC[C@@H](Nc2cc(NCCC(C)(C)C)ncn2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.