Using O=C([O-])[O-], CCOC(=O)[C@@H](OC(C)(C)C)c1c(C)cc2nc(-c3ccnc(-c4cnc5[nH]c(C)cc5c4)c3)sc2c1-c1ccc(Cl)cc1 to produce CCOC(=O)[C@@H](OC(C)(C)C)c1c(C)cc2nc(-c3ccnc(-c4cnc5c(c4)cc(C)n5C)c3)sc2c1-c1ccc(Cl)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.