(2S,3R,4S,5S)-2,5-Bis[N-[2-(4-oxo-4H-1-benzopyran)carbonyl]amino]-3,4-dihydroxy-1,6-diphenyl hexane 3,4-diOH-1,6-diPh-Hex-2,5-diNH2, benzpyran-CO deriv. AIDS-043098 AIDS043098