Using O=C([O-])[O-], CC(C)(C)OC(=O)Cn1cc(C2NS(=O)(=O)c3ccccc32)c2ccccc21 to produce CN1C(c2cn(CC(=O)O)c3ccccc23)c2ccccc2S1(=O)=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.