Using O=C=O, CN(Cc1ccccc1)c1cc(Br)nc(Oc2cccc(C(F)(F)F)c2)c1 to produce CN(Cc1ccccc1)c1cc(Oc2cccc(C(F)(F)F)c2)nc(C(=O)O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.