27649-20-3 3-(10,11-Dihydro-5H-dibenzo(a,d)cyclohepten-5-ylidene)tropane dimethylsulfate 8-Azoniabicyclo(3.2.1)octane, 3-(10,11-dihydro-5H-dibenzo(a,d)cyclohepten-5-ylidene)-8,8-dimethyl-, methyl sulfate