(2E)-eicosenoyl-CoA + reduced [electron-transfer flavoprotein] => eicosanoyl-CoA + oxidized [electron-transfer flavoprotein] + H(+)
(2e)-eicosenoyl-coa + reduced [electron-transfer flavoprotein] => eicosanoyl-coa + oxidized [electron-transfer flavoprotein] + h(+)