150840-58-7 AIDS-033497 AIDS033497 Betulinic acid NH-HepCO-Ala deriv. L-Alanine, N-[8-[[(3.beta.)-3-hydroxy-28-oxolup-20(29)-en-28-yl]amino]-1-oxooctyl]- N'-[N-[3.beta.-Hydroxylup-20(29)-en-28-oyl]-8-aminooctanoyl]-L-alanine