The molecule is a quaternary ammonium ion that is (13S,14R)-1,13-dihydroxy-N-methylcanadine in which the alcoholic hydroxy group at position 13 has been converted into the corresponding acetate ester. It derives from a (13S,14R)-1,13-dihydroxy-N-methylcanadine.
[(1R,21S)-3-hydroxy-16,17-dimethoxy-13-methyl-5,7-dioxa-13-azoniapentacyclo[11.8.0.02,10.04,8.015,20]henicosa-2,4(8),9,15(20),16,18-hexaen-21-yl] acetate