AIDS-165741 AIDS165741 Naphtho[2,3-d]oxazole-3(2H)-propanesulfonic acid, 2-[(2E)-4-(1,3-dibutyltetrahydro-4,6-dioxo-2-thioxo-5(2H)-pyrimidinylidene)-2-butenylidene]-, (2E)- S-133(*Triethylammonium salt*)