150840-75-8 AIDS-005823 AIDS005823 Betulinic acid deriv. Heptanoic acid, 3-hydroxy-4-[[8-[[(3.beta.)-3-hydroxy-28-oxolup-20(29)-en-28-yl]amino]-1-oxooctyl]amino]-6-methyl-, (3S,4S)- RPR 103611 RPR103611