Using COc1c(C)cc(C)c(C=CC(C)=O)c1C, CCOC(=O)CC(=O)OCC to produce COc1c(C)cc(C)c(C2CC(=O)C=C(O)C2)c1C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.