Using CC(=O)SC(CC(=O)c1ccc(Oc2ccccc2)cc1)C(=O)O to produce O=C(CC(S)C(=O)O)c1ccc(Oc2ccccc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.