Using O=[O+][O-], C=Cc1cc(N(C(=O)OC(C)(C)C)C(=O)OC(C)(C)C)c(OC)c(C(=O)OC)n1 to produce COC(=O)c1nc(C=O)cc(N(C(=O)OC(C)(C)C)C(=O)OC(C)(C)C)c1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.