Using CC(C)(C)OC(=O)OC(=O)OC(C)(C)C, COc1cc(COc2cc(N)[nH]n2)cc(OC)c1 to produce COc1cc(COc2cc(N)n(C(=O)OC(C)(C)C)n2)cc(OC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.