Using CSc1ccc(Nc2cc(C(=O)NNC(=O)C(C)(C)OC(C)=O)ccn2)cc1 to produce CSc1ccc(Nc2cc(-c3nnc(C(C)(C)OC(C)=O)o3)ccn2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.