Using CCOC(=O)c1c(C)nc2cccc(OCC(C)(C)C(=O)NC(C)C)c2c1N to produce Cc1nc2cccc(OCC(C)(C)C(=O)NC(C)C)c2c(N)c1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.