Novestrol is an antifertility drug. Its structure is as follows, Which \(H-atom\) is most acidic ?
List-I
(Class of Drug)
List-II
(Example)
(a) Antacid
(i) Novestrol
(b) Artificial Sweetener
(ii) Cimetidine
(c) Antifertility
(iii) Valium
(d) Tranquilizers
(iv) Alitame