(7a-Ethyltetrahydro[1,3]thiazolo[2,3-b][1,3]oxazol-2-yl)methyl phenyl ether 7a-Ethyl-2-(phenoxymethyl)tetrahydro[1,3]thiazolo[2,3-b][1,3]oxazole AIDS-130126 AIDS130126 NSC380273