A Study of BLEX 404 Oral Liquid in Patients With International Prognostic Scoring System (IPSS) Intermediate-1, Intermediate-2 or High-Risk Myelodysplastic Syndrome (MDS) and Chronic Myelomonocytic Leukemia (CMML)

Inclusion Criteria: * Age 20 or older, able to sign informed consent, understand and comply with protocol requirements and instructions. * Body weight between 30 to 120 kg * International Prognostic Scoring System (IPSS) intermediate-1 (int-1), intermediate-2 (int-2) or high-risk myelodysplastic syndrome (MDS) by World Health Organization (WHO) or Chronic Myelomonocytic Leukemia (CMML) patients. * Not previously treated with MDS and CMML therapy and require treatment with azacitidine\* for the first time at 75 mg/m2 subcutaneously or intravenously, daily for 7 days (7 nonconsecutive day of 6-1-1 or 5-2-2 treatment schedule is acceptable in which the drug is administered Monday-Saturday and then Monday of the following week for a 6-1-1 schedule, and in which the drug is administered Monday-Friday and then Monday-Tuesday of the following week for 5-2-2 schedule) per cycle. Treatment of the study drug, BLEX 404 Oral Liquid will begin at the same time receiving the first dose of azacitidine in this study. * Eastern Cooperative Oncology Group (ECOG) Performance Status 0-3. * Adequate baseline organ function defined by the criteria below: total bilirubin ≤ 1.5x the upper limit of normal (ULN) except for Gilbert's syndrome or indirect hyperbilirubinemia due to hemolysis; ALT ≤ 2.5x ULN; AST ≤ 2.5x ULN; creatinine clearance ≥ 60 mL/min/1.73 m2. * Women must be either of non-child bearing potential, or women with child-bearing potential and men with reproductive potential and a femal…