label: (4Z,7Z,10Z,13Z,16Z,19Z)-docosahexaenoyl-CoA + oxidized [electron-transfer flavoprotein] + H(+) => (2E,4Z,7Z,10Z,13Z,16Z,19Z)-docosaheptaenoyl-CoA + reduced [electron-transfer flavoprotein]
label_lc: (4z,7z,10z,13z,16z,19z)-docosahexaenoyl-coa + oxidized [electron-transfer flavoprotein] + h(+) => (2e,4z,7z,10z,13z,16z,19z)-docosaheptaenoyl-coa + reduced [electron-transfer flavoprotein]