.beta.-Alanine, N-[8-[[(3.beta.)-3-hydroxy-28-oxolup-20(29)-en-28-yl]amino]-1-oxooctyl]- 150840-55-4 AIDS-033491 AIDS033491 Betulinic acid NH-HepCONHEtCOOH deriv. N'-[N-[3.beta.-Hydroxylup-20(29)-en-28-oyl]-8-aminooctanoyl]-3-aminopropanoic acid