174740-61-5 AIDS-033520 AIDS033520 Benzoic acid, 4-[[8-[[(3.beta.)-3-hydroxy-28-oxolup-20(29)-en-28-yl]amino]-1-oxooctyl]amino]- Betulinic acid NH-HepCONH-C6H5-COOH deriv. N'-[N-3.beta.-Hydroxylup-20(29)-en-28-oyl]-8-aminooctanoyl]-4-aminobenzoic acid