Using COC=Cc1ccc(C(OC(C)=O)c2ccccc2)cc1, O=C([O-])O to produce COC(Cc1ccc(C(OC)c2ccccc2)cc1)OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.