11-Isopropyl-2,4-diazaspiro[5.5]undec-8-ene-1,3,5-trione 67196-38-7 AIDS-126603 AIDS126603 NSC117454 {2,4-Diazaspiro[5.5]undec-8-ene-1,3,5-trione,} 11-(1-methylethyl)- {2,4-Diazaspiro[5.5]undec-8-ene-1,3,5-trione,} 11-isopropyl-