hydroxymalonate + (E)-sinapoyl-CoA = (E)-sinapoyltartronate + CoA
hydroxymalonate + (e)-sinapoyl-coa = (e)-sinapoyltartronate + coa
hydroxymalonate + (E)-sinapoyl-CoA = (E)-sinapoyltartronate + CoA
hydroxymalonate + (e)-sinapoyl-coa = (e)-sinapoyltartronate + coa