<qa>  What is the name of the treatment that patients have received temozolomide?- Chemotherapy: No more than 2 previous chemotherapybiologic therapy regimens; evidence of recovery from prior chemotherapybiologic therapy; no myelosuppressive chemotherapy within 3 weeks 6 weeks if a nitrosourea agent of study entry; patients who have received temozolomide are eligible if they have not received the drug in the past 3 months and did not experience any non-hematopoietic Grade 34 toxicity with prior temozolomide therapy 