5,6,7,8,10,11,12,13,19,20,21,22,24,25,26,27-Hexadecahydrodi[1,3]dithiolo[4,5-b:4,5-o][1,4,9,14,17,22]hexathiacyclohexacosine-2,16-dithione AIDS-144135 AIDS144135 NSC666274