2',3',4',5'-Tetrahydro-3',3'-dimethylspiro(cyclohexane-1,1'-(1H)pyrido(4,3-b)indole) HCl 2H2O 60948-03-0 Spiro(cyclohexane-1,1'-(1H)pyrido(4,3-b)indole), 2',3',4',5'-tetrahydro-3',3'-dimethyl-, monohydrochloride, dihydrate