[{"from": "human", "value": "Please give me some details about this molecule. [C][C][C][C@H1][Branch2][Ring1][N][C@H1][Branch2][Ring1][#Branch1][C][N][C][=Branch1][P][=C][N][=C][C][Ring1][=Branch1][=N][C][=Branch1][C][=O][N][C][Ring1][#Branch1][=O][C][O][O]"}, {"from": "gpt", "value": "The molecule is a pteridine that is lumazine substituted with a 1,4-dideoxy-1-D-ribityl group at position 8 and a methyl group at position 7; one of 20 modifications to the potent microbial riboflavin-based metabolite antigen 5-(2-oxopropylideneamino)-6-D-ribityl aminouracil (5-OP-RU), an activator of mucosal-associated invariant T (MAIT) cells when presented by the MR1 protein (reported in MED:32123373). It is functionally related to a lumazine and a ribitol."}]