Using CC1(C)OB(c2ccc(NC(=O)Oc3ccccc3)cc2F)OC1(C)C, NCCF to produce CC1(C)OB(c2ccc(NC(=O)NCCF)cc2F)OC1(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.