[{"from": "human", "value": "Please give me some details about this molecule. [C][C][C][C][C@@H1][Branch2][Ring2][Branch1][C][=Branch1][C][=O][N][C@@H1][Branch1][#Branch1][C][C][=Branch1][C][=O][O][C][=Branch1][C][=O][N][C@@H1][Branch1][#Branch2][C][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][N][N][C][=Branch1][C][=O][C@H1][Branch1][#C][C][C][=C][N][C][=C][C][=C][C][=C][Ring1][=Branch1][Ring1][=Branch2][N][C][=Branch1][C][=O][C][N][C][=Branch1][C][=O][C@H1][Branch1][=N][C][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][N][C][=Branch1][C][=O][C@H1][Branch1][C][C][N][C][=Branch1][C][=O][C@@H1][Branch1][Branch2][C][C][C][=Branch1][C][=O][O][N][C][=Branch1][C][=O][C@@H1][Branch1][Branch2][C][C][C][=Branch1][C][=O][O][N][C][=Branch1][C][=O][C@@H1][Branch1][Branch2][C][C][C][=Branch1][C][=O][O][N][C][=Branch1][C][=O][C@@H1][Branch1][Branch2][C][C][C][=Branch1][C][=O][O][N][C][=Branch1][C][=O][C@@H1][Branch1][Branch2][C][C][C][=Branch1][C][=O][O][N][C][=Branch1][C][=O][C@@H1][Branch1][Branch2][C][C][C][=Branch1][C][=O][O][N][C][=Branch1][C][=O][C][N][C][C][N][Branch2][Ring1][O][C][C][N][Branch1][S][C][C][N][Branch1][Branch1][C][C][Ring1][N][C][C][=Branch1][C][=O][O-1][C][C][=Branch1][C][=O][O-1][C][C][=Branch1][C][=O][O-1].[177Lu+3]"}, {"from": "gpt", "value": "The molecule is a radioconjugate composed of PP-F11N, a gastrin analog, conjugated to the beta-emitting radioisotope lutetium Lu 177, with potential antineoplastic activity and potential use as an imaging agent for scintigraphy. Following intravenous administration, the PP-F11N moiety binds to the cholecystokinin-2 (CCK-2) receptor. Subsequently, the CCK-2 receptor-expressing tumor cells can be visualized scintigraphically. In addition, the radioisotope moiety delivers a cytotoxic dose of beta radiation to CCK-2 receptor-expressing tumor cells. CCK-2 receptors are expressed on a variety of tumor cell types."}]