[{"from": "human", "value": "Provide a description of this molecule. [C][O][C@H1][Branch1][#Branch1][C@H1][Branch1][Ring1][C][=O][O][C@@H1][Branch1][#Branch1][C@@H1][Branch1][Ring1][C][O][O][O]"}, {"from": "gpt", "value": "The molecule is a D-aldohexose that is D-glucose in which the hydrogen of the hydroxy group at position 3 has been substituted by a methyl group. It is a non-metabolisable glucose analogue that is not phosphorylated by hexokinase and is used as a marker to assess glucose transport by evaluating its uptake within various cells and organ systems. It is functionally related to an aldehydo-D-glucose."}]