Using CCCS(=O)(=O)Nc1ccc(F)c(C(=O)O)c1F, Nc1cnc2[nH]nc(OCCF)c2c1 to produce CCCS(=O)(=O)Nc1ccc(F)c(C(=O)Nc2cnc3[nH]nc(OCCF)c3c2)c1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.