AIDS-129474 AIDS129474 NSC349446 Spiro[1,5-benzothiazepine-2(3H),6'(5'H)-furo[2,3-d][1,3]dioxole], 5'-(2,2-dimethyl-1,3-dioxolan-4-yl)-3'a,6'a-dihydro-2',2',4-trimethyl-