Using O=Cc1ccc(Cl)cc1, CC(=O)C1(Sc2ccccc2)CC1 to produce O=C(C=Cc1ccc(Cl)cc1)C1(Sc2ccccc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.