The molecule is the conjugate acid of 11-O-demethyl-17-O-deacetylvindoline arising from protonation of the tertiary amino group; major species at pH 7.3. It is a conjugate acid of an 11-O-demethyl-17-O-deacetylvindoline.
methyl (1S,9R,10S,11R,12R,19R)-12-ethyl-5,10,11-trihydroxy-8-methyl-8-aza-16-azoniapentacyclo[10.6.1.01,9.02,7.016,19]nonadeca-2(7),3,5,13-tetraene-10-carboxylate