Using COC(=O)c1nccc(Sc2cnc(Nc3ccc(CNC(=O)OC(C)(C)C)cn3)s2)c1F to produce CC(C)(C)OC(=O)NCc1ccc(Nc2ncc(Sc3ccnc(C(=O)O)c3F)s2)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.