Synonyms: Methanesulfonamide,N-[2-(1,3,4,6,7,12b-hexahydro-2'-oxospiro[2H-benzofuro[2,3-a]quinolizine-2,4'-imidazolidin]-3'-yl)ethyl]-,monohydrochloride, (2R-trans)-; Methanesulfonamide,N-[2-[(2R,12bS)-1,3,4,6,7,12b-hexahydro-2'-oxospiro[2H-benzofuro[2,3-a]quinolizine-2,4'-imidazolidin]-3'-yl]ethyl]-,monohydrochloride (9CI);Spiro[2H-benzofuro[2,3-a]quinolizine-2,4'-imidazolidine], methanesulfonamidederiv.; MK 467