J A Glinski et al.
Acta crystallographica. Section C, Crystal structure communications, 44 ( Pt 9), 1593-1598 (1988-09-15)
lambda(Mo K alpha) = 0.71069 A, T = 298 K. Anonamine (I) (12,21-dihydroxy-4-methyl-4,8-secosenecionan-8,11,16-trione): C19H27NO7, Mr = 381.2, monoclinic, C2, a = 24.247 (7), b = 8.766 (2), c = 9.072 (1) A, beta = 99.21 (2) degrees, U = 1903.3