Sentence: We treated this patient with six cycles of CHOEP ( Cyclophosphamide , Doxorubicin , Vincristine , Etoposide , and Prednisone ) chemotherapy .
Drug combination annotation:
[{'class': 'POS', 'spans': ['Cyclophosphamide', 'Doxorubicin', 'Vincristine', 'Etoposide', 'Prednisone'], 'is_context_needed': True}]