How should the enzyme ec.1.1.1.27 be expressed

This is the international systematic nomenclature of enzymes: the first 1 in Baidu encyclopedia: on behalf of the type of enzyme is an oxidoreductase (2 is a transfer enzyme; 3 is a hydrolase; 4 is a cleavage enzyme; 5 is an isomerase; 6 is a synthetase OR a ligase), the second 1 is a sub-subclass: on behalf of the action of the characteristics of the moiety or bond (1 is oxidation of the moiety is a CHOH moiety), the third 1-sub-subclass: on behalf of the characteristics of the substrate (in this subclass) The first sub-subclass: NADH is the receptor for H), the fourth 1: represents the enzyme's ranking number in the sub-subclass. To adopt ah ~~