Using CCCCOC(=O)C(=O)c1ccoc1, COC(=O)CSCC(=O)OC to produce COC(=O)c1sc(C(=O)OC)c(-c2ccoc2)c1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.