173106-26-8 AIDS-033544 AIDS033544 Betulinic acid, 11-aminoundecanoate deriv. N-[2.beta.,3.beta.-Dihydroxylup-20(29)-en-28-oyl]-11-aminoundecanoic acid Undecanoic acid, 11-[[(2.beta.,3.beta.)-2,3-dihydroxy-28-oxolup-20(29)-en-28-yl]amino]-