Using C=C(C)c1cc2c(cc1C1CCN(C(=O)OC(C)(C)C)CC1)N1C(=NNC(=O)C1C)CO2 to produce CC(C)c1cc2c(cc1C1CCN(C(=O)OC(C)(C)C)CC1)N1C(=NNC(=O)C1C)CO2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.