label: 2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycero-3-phosphocholine + 1-hexadecanoyl-N-(acetyl)-sphing-4-enine => 1-hexadecanoyl-2-(4Z,7Z,10Z,13Z,16Z,19Z-docosahexaenoyl)-sn-glycero-3-phosphocholine + N-(acetyl)-sphing-4-enine
label_lc: 2-(4z,7z,10z,13z,16z,19z-docosahexaenoyl)-sn-glycero-3-phosphocholine + 1-hexadecanoyl-n-(acetyl)-sphing-4-enine => 1-hexadecanoyl-2-(4z,7z,10z,13z,16z,19z-docosahexaenoyl)-sn-glycero-3-phosphocholine + n-(acetyl)-sphing-4-enine