Using CCOC(=O)c1cc2c(OCc3ccccc3)cccc2[nH]1, CC(C)(C)OC(=O)OC(=O)OC(C)(C)C to produce CCOC(=O)c1cc2c(OCc3ccccc3)cccc2n1C(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.