A 23-year-old male farmer presents with 5 days of fever, chills, myalgia, nausea and vomiting, red-colored urine, and oliguria (100-200ml/day). Physical exam shows periorbital edema, conjunctival edema and hemorrhage, petechiae on the back and axilla, and ecchymoses on the upper arm. Lab results: Hb 180g/L, WBC 60×10<sup>9</sup>/L, platelets 34×10<sup>9</sup>/L, blood smear shows 12% blast cells and 20% atypical lymphocytes, urinalysis reveals RBCs full field and protein (+++). The most likely diagnosis is: