temozolomide [ 8-carbamoyl-3-methylimidazo(5,1-d)-1,2,3,5-tetrazin-4(3H)-one,CCRG 81045,CCRG-81045,Essex brand of temozolomide,M&B 39831,M&B-39831,NSC 362856,NSC-362856,Schering brand of temozolomide,Schering-Plough brand of temozolomide,TMZ-Bioshuttle,Temodal,Temodar,methazolastone ] structure given in first source