Using COc1ccc(C2CSc3cc(OC)ccc3C2=O)cc1, C1CCOC1 to produce COc1ccc(C2(C)CSc3cc(OC)ccc3C2=O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.