Using CCOC(=O)c1cc(S(=O)(=O)N2CCN(CC)CC2)cnc1OCC to produce CCOc1ncc(S(=O)(=O)N2CCN(CC)CC2)cc1C(=O)O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.