Using C=CC(=O)OC(C)(C)C, COC(=O)c1ccc(C=O)cc1 to produce C=C(C(=O)OC(C)(C)C)C(O)c1ccc(C(=O)OC)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.