label: a 1,3-diacyl-2-(9Z,12Z-octadecadienoyl)-glycerol + an N-(omega-hydroxy-ultra-long chain fatty acyl)-sphing-4-enine <=> an N-(omega-(9Z,12Z-octadecadienoyloxy)-ultra-long chain fatty acyl)-sphing-4-enine + a 1,3-diacylglycerol
label_lc: a 1,3-diacyl-2-(9z,12z-octadecadienoyl)-glycerol + an n-(omega-hydroxy-ultra-long chain fatty acyl)-sphing-4-enine <=> an n-(omega-(9z,12z-octadecadienoyloxy)-ultra-long chain fatty acyl)-sphing-4-enine + a 1,3-diacylglycerol