(4R)-hydroxysphinganine + eicosanoyl-CoA => N-eicosanoyl-(4R)-hydroxysphinganine + CoA + H(+)
(4r)-hydroxysphinganine + eicosanoyl-coa => n-eicosanoyl-(4r)-hydroxysphinganine + coa + h(+)
(4R)-hydroxysphinganine + eicosanoyl-CoA => N-eicosanoyl-(4R)-hydroxysphinganine + CoA + H(+)
(4r)-hydroxysphinganine + eicosanoyl-coa => n-eicosanoyl-(4r)-hydroxysphinganine + coa + h(+)