[{"from": "human", "value": "What can you tell me about this molecule? [C][N][C][=C][Branch2][Ring1][C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][N][Branch1][Ring2][C][C][Cl][C][C][Cl][N][=C][Ring1][S][C][C][C][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a nitrogen mustard drug indicated for use in the treatment of chronic lymphocytic leukemia (CLL) and indolent B-cell non-Hodgkin lymphoma (NHL) that has progressed during or within six months of treatment with rituximab or a rituximab-containing regimen.  Bendamustine is a bifunctional mechlorethamine derivative capable of forming electrophilic alkyl groups that covalently bond to other molecules. Through this function as an alkylating agent, bendamustine causes intra- and inter-strand crosslinks between DNA bases resulting in cell death.  It is active against both active and quiescent cells, although the exact mechanism of action is unknown."}]