Using COC(=O)c1ccc(NC(=O)c2cc(Cl)c(OCc3ccccc3)c(OC3CCCCC3)c2)cc1 to produce COC(=O)c1ccc(NC(=O)c2cc(Cl)c(O)c(OC3CCCCC3)c2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.