150840-63-4 AIDS-033504 AIDS033504 Betulinic acid NH-HepCO-Asn deriv. L-Asparagine, N2-[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-asparaginate