Synonyms: Spiro[naphthalene-1(2H),3'-pyrrolidine]-2',5'-dione,1'-[1-[(diethylamino)methyl]propyl]-3,4-dihydro-, monohydrochloride, (R*,R*)-(9CI); Spiro[naphthalene-1(2H),3'-pyrrolidine]-2',5'-dione,1'-[1-[(diethylamino)methyl]propyl]-3,4-dihydro-, monohydrochloride, (R*,R*)-(?à)-