90547-90-3 Avenacin A 1 Avenacin A-1 Oleanan-29-al, 12,13-epoxy-3-((O-beta-D-glucopyranosyl-(1-2)-O-(beta-D-glucopyranosyl-(1-4))-alpha-L-arabinopyranosyl)oxy)-16,23-dihydroxy-21-((2-(methylamino)benzoyl)oxy)-, (3beta,4alpha,12beta,16beta,20beta,21beta)-