AIDS-136288 AIDS136288 Carbamic acid, [(7,16-dioxo-6,17-dioxa-3,20-dithia-8,15-diazadocosane-1,22-diyl)bis[(3,4-dihydro-3-methyl-2,4-dioxo-1,5(2H)-pyrimidinediyl)carbonyl]]bis-, diethyl ester NSC637505