Using OCCc1cc(Cl)ccc1F, COC(=O)C1(NC(=O)c2ccc(OC)c(O)c2)CCCCCC1 to produce COC(=O)C1(NC(=O)c2ccc(OC)c(OCCc3cc(Cl)ccc3F)c2)CCCCCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.