3',4'-Dihydrospiro(imidazoline-4,2'(1'H)-naphthalene)-2',5'-dithione 7,8-Benzo-1,3-diazaspiro(4.5)decane-2,4-dithione Spiro(imidazoline-4,2'(1'H)-naphthalene)-2',5'-dithione, 3',4'-dihydro- WH1312309