Noun
English Wikipedia has an article on:belladonnineWikipedia
belladonnine (uncountable)
(organic chemistry) A tropane alkaloid, bis(8-methyl-8-azabicyclo[3.2.1]octan-3-yl) (1S,4S)-4-phenyl-2,3-dihydro-1H-naphthalene-1,4-dicarboxylate, related to atropine