[{"from": "human", "value": "Provide a description of this molecule. [C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][S][=Branch1][C][=O][=Branch1][C][=O][N][C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][#C][/C][=C][/C][=Branch1][C][=O][N][O]"}, {"from": "gpt", "value": "The molecule is an inhibitor of histone deacetylase.  It is an aromatic sulfonamide hydroxamate initially found in a screen for inhibitors of the tumorigenic phenotype of K-ras-transformed NIH3T3 cells."}]