Using C=CCC1(c2ccc(OC)cc2)CSc2cc(OC)ccc2C1=O to produce CCCC1(c2ccc(OC)cc2)CSc2cc(OC)ccc2C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.