N-(2-hydroxy-hexanoyl)-beta-D-galactosyl-sphing-4-enine + UDP + H(+) => N-(2-hydroxy-hexanoyl)-sphing-4-enine + UDP-alpha-D-galactose
n-(2-hydroxy-hexanoyl)-beta-d-galactosyl-sphing-4-enine + udp + h(+) => n-(2-hydroxy-hexanoyl)-sphing-4-enine + udp-alpha-d-galactose