150840-65-6 AIDS-033502 AIDS033502 Betulinic acid NH-HepCO-Pro deriv. L-Proline, 1-[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-proline