Using CC(C)(C)OC(=O)c1cccc(Nc2nnc(C(=O)Nc3ccc(N4CCOCC4)nc3)o2)c1 to produce O=C(O)c1cccc(Nc2nnc(C(=O)Nc3ccc(N4CCOCC4)nc3)o2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.