Using CCOc1ccc(-c2nc(-c3cccc4c3CCN4C3COC(C)(C)OC3)no2)cc1OCC to produce CCOc1ccc(-c2nc(-c3cccc4c3CCN4C(CO)CO)no2)cc1OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.