3-oxochola-4,17-dien-22-oyl-CoA + AH2 => 3-oxochol-4-en-22-oyl-CoA + A
3-oxochola-4,17-dien-22-oyl-coa + ah2 => 3-oxochol-4-en-22-oyl-coa + a
3-oxochola-4,17-dien-22-oyl-CoA + AH2 => 3-oxochol-4-en-22-oyl-CoA + A
3-oxochola-4,17-dien-22-oyl-coa + ah2 => 3-oxochol-4-en-22-oyl-coa + a