Using OCC1CCCC1, COc1nc(C(O)c2ccc(C(C)(C)C)cc2)ccc1Cl to produce COc1nc(C(OCC2CCCC2)c2ccc(C(C)(C)C)cc2)ccc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.