Complex sentence: Mitoxantrone is an Anthracenedione (not an anthracycline) antineoplastic agent used in the treatment of certain types of cancer, mostly metastatic breast cancer, acute myeloid leukemia, and non-Hodgkin's lymphoma.
Split into simpler sentences: Mitoxantrone is an Anthracenedione (not an anthracycline) antineoplastic agent. It is used in the treatment of certain types of cancer, mostly metastatic breast cancer, acute myeloid leukemia, and non-Hodgkin's lymphoma.