173106-44-0 AIDS-033548 AIDS033548 Betulinic acid, 11-aminoundecanoate deriv. N-[3.beta.-Hydroxy-30-(acetylamino)lup-20(29)en-28-oyl]-11-aminoundecanoic acid Undecanoic acid, 11-[[(3.beta.)-30-(acetylamino)-3-hydroxy-28-oxolup-20(29)-en-28-yl]amino]-