The Conformist (Italian: Il conformista) is a 1970 political drama film directed by Bernardo Bertolucci, whose screenplay is based on the 1951 novel The Conformist by Alberto Moravia. The film stars Jean-Louis Trintignant, Stefania Sandrelli, Gastone Moschin, Enzo Tarascio, Fosco Giachetti, José Quaglio, Dominique Sanda and Pierre Clémenti. The film was a co-production of Italian, French, and West German film companies.

References:
https://en.wikipedia.org/wiki/The_Conformist_(1970_film)