Using CCN(c1nc(C)cc(CO)n1)c1ccc(C(C)C)cc1Br, CI to produce CCN(c1nc(C)cc(COC)n1)c1ccc(C(C)C)cc1Br, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.