Using Nc1cccc(-c2cccs2)c1, COc1ccc(NCc2ccc(C(=O)O)cc2)cc1OC to produce COc1ccc(NCc2ccc(C(=O)Nc3cccc(-c4cccs4)c3)cc2)cc1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.