AIDS-073038 AIDS073038 Carbamic acid, [(1S,2R)-2-hydroxy-3-[[(4-methoxyphenyl)sulfonyl](2-methylpropyl)amino]-1-(phenylmethyl)propyl]-, (3S,3aR,7aS)-hexahydro-4H-furo[2,3-b]pyran-3-yl ester Sulfonamide isostere