butanoyl-CoA + NADP(+) => (2E)-butenoyl-CoA + NADPH + H(+)
butanoyl-coa + nadp(+) => (2e)-butenoyl-coa + nadph + h(+)
butanoyl-CoA + NADP(+) => (2E)-butenoyl-CoA + NADPH + H(+)
butanoyl-coa + nadp(+) => (2e)-butenoyl-coa + nadph + h(+)