1-[3-(2-hydroxyethyl)-2,2-dimethylcyclobutyl]pyrimidine-2,4-dione 1-[3-(2-hydroxyethyl)-2,2-dimethyl-cyclobutyl]pyrimidine-2,4-dione 1-[3-(2-hydroxyethyl)-2,2-dimethyl-cyclobutyl]pyrimidine-2,4-quinone NCI60_036015 NSC700347