(5alpha,10alpha,11beta)-10,11-Dihydro-5-(3-(methylamino)propyl)-5,10-epoxy-5H-dibenzo(a,d)cyclohepten-11-0l, (Z)-2-butenedioate (1:1) salt 5154-92-7 MK 940 MK-940 trans-10,11-Dihydro-5,10-epoxy-5-(3-(methylamino)propyl)-5H-dibenzo(a,d)cyclohepten-11-ol hydrogen maleate