Using Nc1nc(Cl)cc(Cl)n1, OCC12CC3CC(CC(C3)C1)C2 to produce Nc1nc(Cl)cc(OCC23CC4CC(CC(C4)C2)C3)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.