Using COC(=O)CCC(=O)NCc1cc(-c2cccs2)[nH]c1-c1cccs1 to produce O=C(O)CCC(=O)NCc1cc(-c2cccs2)[nH]c1-c1cccs1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.