[{"from": "human", "value": "What can you tell me about this molecule? [C][C@H1][Branch2][O][P][C@H1][C][=Branch1][C][=O][N][C@@H1][Branch2][#Branch2][Branch2][C][S][S][C][C@@H1][Branch2][=Branch1][C][C][=Branch1][C][=O][N][C@H1][Branch2][Ring2][=N][C][=Branch1][C][=O][N][C@@H1][Branch2][Ring1][=Branch1][C][=Branch1][C][=O][N][C@H1][Branch1][=Branch2][C][=Branch1][C][=O][N][Ring2][Ring1][=Branch2][C][C][C][C][N][C][C][=C][N][C][=C][C][=C][C][=C][Ring1][=Branch1][Ring1][=Branch2][C][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][O][N][C][=Branch1][C][=O][C@@H1][Branch1][#Branch2][C][C][=C][C][=C][C][=C][Ring1][=Branch1][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][C][=Branch1][C][=O][N][C@H1][Branch1][Ring1][C][O][C@@H1][Branch1][C][C][O][O].[68Ga+3]"}, {"from": "gpt", "value": "The molecule is a radioconjugate consisting of the octreotide derivative edotreotide labeled with gallium 68 (Ga-68) with potential application in somatostatin receptor (SSTR) imaging in conjunction with positron emission tomography (PET). Similar to octreotide, gallium Ga 68-edotreotide binds to SSTRs, especially type 2 receptors, present on the cell membranes of many types of neuroendocrine tumor cells and their metastases, thereby allowing for imaging of SSTR-expressing cells upon PET. Gallium Ga 68-edotreotide is produced by substituting tyrosine for phenylalanine at the 3 position of the somatostatin analogue octreotide (Tyr3-octreotide or TOC) and chelating the substituted octreotide to Ga-68 via the macrocyclic chelating agent dodecanetetraacetic acid (DOTA)."}]