150840-33-8 3aH-Cyclopenta[a]chrysene, undecanoic acid deriv. AIDS-033524 AIDS033524 Betulinic acid, 11-aminoundecanoate deriv. Lupane, undecanoic acid deriv. N-[3.alpha.-Oxolup-20(29)-en-28-oyl]-11-aminoundecanoic acid Undecanoic acid, 11-[(3,28-dioxolup-20(29)-en-28-yl)amino]-