A 38-year-old patient complains about inertness, subfebrile temperature, enlargement of lymph nodes, nasal hemorrhages, bone pain. Objectively: the patient's skin and mucous membranes are pale, palpation revealed enlarged painless lymph nodes; sternalgia; liver was enlarged by 2 cm, spleen - by 5 cm, painless. In blood: erythrocytes - 2,7 × 1012/l, Hb- 84 g/l, leukocytes - 58 × 109/l, eosinophils -1%, stab neutrophils - 2%, segmented neutrophils - 12%, lymphocytes - 83%, lymphoblasts - 2%, smudge cells; ESR - 57 mm/h. What is the most probable diagnosis?