Using OB(O)c1ccc(F)c(Cl)c1, CCC1(CC)OC(=O)N(C)c2ccc(O)cc21 to produce CCC1(CC)OC(=O)N(C)c2ccc(Oc3ccc(F)c(Cl)c3)cc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.