preferred_name: a (7Z,10Z,13Z,16Z,19Z)-docosapentaenoyl derivative + 2 Fe(II)-[cytochrome b5] + O2 + 2 H(+) = a (4Z,7Z,10Z,13Z,16Z,19Z)-docosahexaenoyl derivative + 2 Fe(III)-[cytochrome b5] + 2 H2O
preferred_name_lc: a (7z,10z,13z,16z,19z)-docosapentaenoyl derivative + 2 fe(ii)-[cytochrome b5] + o2 + 2 h(+) = a (4z,7z,10z,13z,16z,19z)-docosahexaenoyl derivative + 2 fe(iii)-[cytochrome b5] + 2 h2o
label: a (7Z,10Z,13Z,16Z,19Z)-docosapentaenoyl derivative + 2 Fe(II)-[cytochrome b5] + O2 + 2 H(+) = a (4Z,7Z,10Z,13Z,16Z,19Z)-docosahexaenoyl derivative + 2 Fe(III)-[cytochrome b5] + 2 H2O
label_lc: a (7z,10z,13z,16z,19z)-docosapentaenoyl derivative + 2 fe(ii)-[cytochrome b5] + o2 + 2 h(+) = a (4z,7z,10z,13z,16z,19z)-docosahexaenoyl derivative + 2 fe(iii)-[cytochrome b5] + 2 h2o