Using CC(C)(C)OC(=O)OC(=O)OC(C)(C)C, Cc1ccc(C(=O)N(C)C)c(C)c1N to produce Cc1ccc(C(=O)N(C)C)c(C)c1N=C=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.