Using O=C([O-])[O-], CCOC(=O)CC1OB(O)c2cc(O)cc(F)c21 to produce CCOC(=O)CC1OB(O)c2cc(OC)cc(F)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.