Using O=C(O)C(F)(F)F, CC1CCN(C(=O)c2ccc(-c3nc4ccc(O)cc4s3)cc2)CC1 to produce CC1CCN(C(=O)c2ccc(-c3nc4ccc(O)c(C=O)c4s3)cc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.