Using Clc1ccc(-c2ccc(N3CCC4(CC3)OCCO4)nn2)cc1Cl to produce O=C1CCN(c2ccc(-c3ccc(Cl)c(Cl)c3)nn2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.