AIDS-181934 AIDS181934 Carbamic acid, [2-(5,9-dihydro-5,9-dioxo-6H-indolo[6,5-f]benzothiazol-6-yl)ethyl]-, 1,1-dimethylethyl ester, compd. with carbamic acid, [2-(5,9-dihydro-5,9-dioxo-6H-indolo[5,6-f]benzothiazol-6-yl)ethyl]-, 1,1-dimethylethyl ester (1:1)