Using CN(C(=O)OC(C)(C)C)C1CNC1, Clc1nccn2nnnc12 to produce CN(C(=O)OC(C)(C)C)C1CN(c2nccn3nnnc23)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.