173106-16-6 AIDS-033527 AIDS033527 Betulinic acid, 11-aminoundecanoate deriv. N-[3.beta.-Hydroxylup-20(29)-en-28-oyl]-N-methyl-11-aminoundecanoic acid Undecanoic acid, 11-[[(3.beta.)-3-hydroxy-28-oxolup-20(29)-en-28-yl]methylamino]-