label: (3E,7Z,10Z,13Z,16Z,19Z)-docosahexaenoyl-CoA + NADP(+) => (2E,4Z,7Z,10Z,13Z,16Z,19Z)-docosaheptaenoyl-CoA + NADPH + H(+)
label_lc: (3e,7z,10z,13z,16z,19z)-docosahexaenoyl-coa + nadp(+) => (2e,4z,7z,10z,13z,16z,19z)-docosaheptaenoyl-coa + nadph + h(+)