53757-98-5 BENZ(a)AZULEN-6,9-IMIN-10-OL, 4b,5,6,7,8,9,9a,10-OCTAHYDRO-2-FLUORO-11-METHYL-, Benz(a)azulen-6,9-imin-10-ol, 4b,5,6,7,8,9,9a,10-octahydro-2-fluoro-11-methyl-, hydrochloride, (4bs-(4b-alpha,6-beta,9-beta,9a-alpha,10-beta))-