Using COC(=O)CN1C(=O)N(c2cc(Cc3n[nH]c(=O)c4ccccc34)ccc2F)C(=O)C1C to produce CC1C(=O)N(c2cc(Cc3n[nH]c(=O)c4ccccc34)ccc2F)C(=O)N1CC(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.