2-Amino-5-({12-[(2-amino-3-nitro-7-oxo(4,8-dihydropyrazolo[1,5-a]pyrimidin-5-yl))methyl]-3,6,9,12-tetraazadispiro[5.2.5.2]hexadec-3-yl}methyl)-3-nitro-4,8-dihydropyrazolo[1,5-a]pyrimidin-7-one AIDS-122575 AIDS122575