174740-65-9 3-[N-3.beta.-Hydroxylup-20(29)-en-28-oyl]-7-aminoheptyl]carbamoyl]benzoic acid AIDS-033519 AIDS033519 Benzoic acid, 3-[[[7-[[(3.beta.-3-hydroxy-28-oxolup-20(29)-en-28-yl]amino]heptyl]amino]carbonyl] Betulinic acid NH-HepCONH-C6H5-COOH deriv.