Using CC1=CCc2ccc(N(NC(=O)OC(C)(C)C)C(=O)OC(C)(C)C)cc21, CCOC(=O)CC(C)=O to produce CC1=NN(c2ccc3c(c2)C(C)CC3)C(=O)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.