[{"from": "human", "value": "Describe this molecule. [C][S][=Branch1][C][=O][C]"}, {"from": "gpt", "value": "The molecule is used widely as a chemical solvent. Because of its ability to penetrate biological membranes, it is used as a vehicle for topical application of pharmaceuticals. It is also used to protect tissue during cryopreservation. Dimethyl sulfoxide shows a range of pharmacological activity including analgesia and anti-inflammation."}]