(4R)-hydroxyeicosasphinganine + hexacosanoyl-CoA <=> N-hexacosanoyl-eicosan-(4R)-hydroxysphinganine + CoA + H(+)
(4r)-hydroxyeicosasphinganine + hexacosanoyl-coa <=> n-hexacosanoyl-eicosan-(4r)-hydroxysphinganine + coa + h(+)