label: 1-(9Z-octadecenoyl)-N-(acetyl)-sphing-4-enine + 1-hexadecanoyl-sn-glycero-3-phosphocholine => 1-hexadecanoyl-2-(9Z-octadecenoyl)-sn-glycero-3-phosphocholine + N-(acetyl)-sphing-4-enine
label_lc: 1-(9z-octadecenoyl)-n-(acetyl)-sphing-4-enine + 1-hexadecanoyl-sn-glycero-3-phosphocholine => 1-hexadecanoyl-2-(9z-octadecenoyl)-sn-glycero-3-phosphocholine + n-(acetyl)-sphing-4-enine