Synonyms: 2-Butenedioicacid, 2-methyl-, 1-ethyl4-[(1R,3R,5S,6R)-8-methyl-6-[[(2E)-2-methyl-1-oxo-2-butenyl]oxy]-8-azabicyclo[3.2.1]oct-3-yl]ester, (2E)- (9CI); 2-Butenedioic acid, 2-methyl-, 1-ethyl4-[8-methyl-6-[(2-methyl-1-oxo-2-butenyl)oxy]-8-azabicyclo[3.2.1]oct-3-yl] ester,[1R-[1a,3b(E),5a,6a(E)]]-; (-)-Schizanthine K;Schizanthine K