Using CCOC(=O)n1nc(N)c2c1C(C)(C)N(C(=O)OC(C)(C)C)C2 to produce CC(C)(C)OC(=O)N1Cc2c(N)n[nH]c2C1(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.