preferred_name: sphing-4-enine 1-phosphate(in) <=> sphing-4-enine 1-phosphate(out)
preferred_name_lc: sphing-4-enine 1-phosphate(in) <=> sphing-4-enine 1-phosphate(out)
label: sphing-4-enine 1-phosphate(in) <=> sphing-4-enine 1-phosphate(out)
label_lc: sphing-4-enine 1-phosphate(in) <=> sphing-4-enine 1-phosphate(out)