Using COc1ccc(-c2c3ccc(OC)cc3cc3sc4ccccc4c23)cc1 to produce Oc1ccc(-c2c3ccc(O)cc3cc3sc4ccccc4c23)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.