Using ClCCN1CCOCC1, COc1ccc2cc3c(N)n[nH]c3nc2c1 to produce COc1ccc2cc3c(N)nn(CCN4CCOCC4)c3nc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.