Using COc1ccc2ncc(OCCN3CCC(NC(=O)OC(C)(C)C)CC3)c(OCc3ccccc3)c2n1 to produce COc1ccc2ncc(OCCN3CCC(NC(=O)OC(C)(C)C)CC3)c(O)c2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.