label: 1-hexadecanoyl-2-(9Z,12Z-octadecadienoyl)-sn-glycero-3-phosphoethanolamine + N-(acetyl)-sphing-4-enine = 1-(9Z,12Z-octadecadienoyl)-N-acetylsphing-4-enine + 1-hexadecanoyl-sn-glycero-3-phosphoethanolamine
label_lc: 1-hexadecanoyl-2-(9z,12z-octadecadienoyl)-sn-glycero-3-phosphoethanolamine + n-(acetyl)-sphing-4-enine = 1-(9z,12z-octadecadienoyl)-n-acetylsphing-4-enine + 1-hexadecanoyl-sn-glycero-3-phosphoethanolamine