32563-71-6 AIDS-124486 AIDS124486 NSC34412 {.Gamma.,.gamma.,.gamma.',.gamma.'-Tetramethylthiazolo[5,} 4-d\]thiazole-2,5-dibutyronitrile {Thiazolo[5,4-d]thiazole-2,5-dibutyronitrile,} .gamma., .gamma.,.gamma.',.gamma.'-tetramethyl- {Thiazolo[5,4-d]thiazole-2,} 5-dibutanenitrile, .gamma.,.gamma.,.gamma.',.gamma.'-tetramethyl-