(4Z,7Z,10Z,13Z,16Z,19Z)-docosahexaenoyl-CoA + FAD + H(+) => (2E,4Z,7Z,10Z,13Z,16Z,19Z)-docosaheptaenoyl-CoA + FADH2
(4z,7z,10z,13z,16z,19z)-docosahexaenoyl-coa + fad + h(+) => (2e,4z,7z,10z,13z,16z,19z)-docosaheptaenoyl-coa + fadh2
(4Z,7Z,10Z,13Z,16Z,19Z)-docosahexaenoyl-CoA + FAD + H(+) => (2E,4Z,7Z,10Z,13Z,16Z,19Z)-docosaheptaenoyl-CoA + FADH2
(4z,7z,10z,13z,16z,19z)-docosahexaenoyl-coa + fad + h(+) => (2e,4z,7z,10z,13z,16z,19z)-docosaheptaenoyl-coa + fadh2