Using CCCCN(c1ccc(C(=O)OCC)cc1)c1ccc2c(c1)C(C)(C)OC2(C)C to produce CCCCN(c1ccc(C(=O)O)cc1)c1ccc2c(c1)C(C)(C)OC2(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.