AIDS-165743 AIDS165743 Naphtho[2,3-d]oxazole-3(2H)-propanesulfonic acid, 2-[(2E)-4-[tetrahydro-1,3-bis(2-methoxyethyl)-4,6-dioxo-2-thioxo-5(2H)-pyrimidinylidene]-2-butenylidene]-, (2E)- S-164(*Triethylammonium salt*)