A 54-year-old man has been hospitalized with complaints of general weakness,fever of 38.6 shortness of breath during significant physical exertion, and frequent nosebleeds. He works in production of plastics, where he comes into contact with aromatic compounds. Objectively, his skin is pale and dry. Complete blood count: erythrocytes 2.11012/L, hemoglobin 90 g/L, leukocytes 2.2109/L, eosinophils 1%, band neutrophils 1%, segmented neutrophils 75%, lymphocytes 20%, myelocytes 3%, platelets 30*109/L, ESR 32 mm/hours. What is the most likely diagnosis in this case?