Using Clc1cc(Cl)cc(CO[C@H]2OCCN(Cc3ccccc3)[C@H]2c2ccccc2)c1 to produce Clc1cc(Cl)cc(CO[C@H]2OCCN[C@H]2c2ccccc2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.