Which Maxim Gorky play did Kurosawa adapt into a 1957 film?

Which Maxim Gorky play did Kurosawa adapt into a 1957 film? Kurosawa adapted The Lower Depths.

Kurosawa’s 1957 film is based on Maxim Gorky’s 1902 play The Lower Depths. Gorky’s original portrays impoverished people living in a lodging house near the Volga; Kurosawa relocates the story to an Edo-period Japanese tenement inhabited by gamblers, thieves, prostitutes, and other people living at society’s margins.

The film, titled Donzoko in Japanese, was written by Kurosawa and Hideo Oguni and stars Toshiro Mifune, Isuzu Yamada, Kyōko Kagawa, and Ganjiro Nakamura. Its bleak ensemble drama preserves Gorky’s interest in harsh poverty, self-deception, and the tension between comforting lies and painful truth. It is not an adaptation of Chekhov’s The Seagull or The Cherry Orchard, nor of Gogol’s The Inspector General.