4-(3-(8-(6-(4-Hydroxyphenyl)[1,2,4]triazolo[3,4-b][1,3,4]thiadiazol-3-yl)octyl)[1,2,4]triazolo[3,4-b][1,3,4]thiadiazol-6-yl)phenol AIDS-153518 AIDS153518 NSC700448