[{"from": "human", "value": "Could you give me a brief overview of this molecule? [11CH3][N][Branch2][Ring1][Ring2][C][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][/C][=C][/C][=Branch1][C][=O][N][O][C][C][C][C][C][C][Branch1][Ring2][C][Ring1][=Branch1][C][C][Branch1][Ring2][C][Ring1][#Branch1][C][Ring1][#Branch2]"}, {"from": "gpt", "value": "The molecule is a radioconjugate composed of martinostat, a histone deacetylase (HDAC) inhibitor, labeled with the positron-emitting isotope carbon C 11, with potential use in imaging via positron emission tomography (PET)/magnetic resonance imaging (MRI). Upon intravenous administration of carbon C 11 martinostat, the martinostat moiety targets and binds to HDAC on tumor cells. Upon PET/MRI imaging, this radioligand may allow for the assessment of HDAC-expressing tumor cells. HDACs, upregulated in many tumor cell types, are a family of metalloenzymes responsible for the deacetylation of chromatin histone proteins."}]