Using CCOC(=O)C1Cc2cc(OCCOC)cc(N(C3CC3)S(=O)(=O)c3ccccn3)c2N1 to produce CCOC(=O)c1cc2cc(OCCOC)cc(N(C3CC3)S(=O)(=O)c3ccccn3)c2[nH]1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.