Question: What Swiss multinational healthcare company, introduced the steroidal progestin, Trengestone, in 1974?
Sentence (from "Trengestone"): Trengestone (INN) (brand names Reteroid, Retroid, Retrone; former developmental code name Ro 4-8347), also known as 6-chloro-6,7-didehydroretroprogesterone or 6-chloro-9β-10α-pregna-1,4,6-triene-3,20-dione, is a steroidal progestin of the retroprogesterone group related to dydrogesterone that was formerly used to treat menstrual disorders.
Relevant evidence: Yes