Using Cc1c(C)c2c(c(C)c1C=O)CC(C)(C)C2, CC(C)=O to produce CC(=O)C=Cc1c(C)c(C)c2c(c1C)CC(C)(C)C2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.