preferred_name: sphinganine 1-phosphate(in) = sphinganine 1-phosphate(out)
preferred_name_lc: sphinganine 1-phosphate(in) = sphinganine 1-phosphate(out)
label: sphinganine 1-phosphate(in) = sphinganine 1-phosphate(out)
label_lc: sphinganine 1-phosphate(in) = sphinganine 1-phosphate(out)