(3,3'-Bithiazolidine)-4,4'-dione, 2,2'-diphenyl-, (+-)- 3,3'-Bithiazolidine-4,4'-dione, 2,2'-diphenyl-, (R*,R*)-(+-)- 95035-73-7 dl-2,2'-Diphenyl(3,3'-bithiazolidine)-4,4'-dione