Using O=C1NCN(c2ccccc2)C12CCN(C[C@@H]1CCc3ccc(Cl)cc3[C@H]1O)CC2 to produce O=C1NCN(c2ccccc2)C12CCN(CC1=Cc3cc(Cl)ccc3CC1)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.