Using C=CCc1ccc(OC(=O)CC2OC(C)(C)OC2=O)c(OC)c1 to produce C=CCc1ccc(OC(=O)CC(O)C(=O)O)c(OC)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.