2,5,9,16-Tetrahydroxy-13,17-dimethoxy-2,9-dimethyl-1,2,3,8,9,10-hexahydroanthra[1,2-b]naphtho[2,3-d]oxonine-4,7,12,15-tetrone AIDS-140075 AIDS140075 Dermocanarin-4 NSC650882