Using O=C(Nc1ccc(Br)c(F)c1)OCc1ccccc1, C=CC(=O)OCC to produce CCOC(=O)C=Cc1ccc(NC(=O)OCc2ccccc2)cc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.