[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a host-specific toxin from the maize pathogen Cochliobolus carbonum.  An inhibitor of histone deacetylase, it is a cyclic tetrapeptide containing an epoxide alpha-amino acid.  Inhibition of histone deacetylase is sensitive to mercaptoethanol treatment."}, {"from": "gpt", "value": "[C][C@@H1][C][=Branch1][C][=O][N][C@H1][Branch2][Ring1][=N][C][=Branch1][C][=O][N][C][C][C][C@@H1][Ring1][Branch1][C][=Branch1][C][=O][N][C@H1][Branch1][=Branch2][C][=Branch1][C][=O][N][Ring2][Ring1][Ring1][C][C][C][C][C][C][C][=Branch1][C][=O][C][C][O][Ring1][Ring1]"}]