Using CCCS(=O)(=O)Nc1ccc(C(=O)c2nc(-c3cccc(C(=O)OC)c3)c3ccccn23)cc1OC to produce CCCS(=O)(=O)Nc1ccc(C(=O)c2nc(-c3cccc(C(=O)O)c3)c3ccccn23)cc1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.