[{"from": "human", "value": "Describe this molecule. [C][Branch1][#C][C@@H1][Branch1][O][C@@H1][Branch1][#Branch1][C@@H1][Branch1][Ring1][C][O][O][O][O][N][C][=C][Branch1][=N][C][=Branch1][C][=O][N][C][=Branch1][C][=O][N][Ring1][Branch2][N][=C][C][=O]"}, {"from": "gpt", "value": "The molecule is an aminouracil that is D-ribitol in which the hydroxy group at position 1 is substituted by the 6-amino group of 6-amino-5-(2-oxoethylideneamino)uracil. Unstable mucosal-associated invariant T (MAIT)-activating antigen, formed by non-enzymatic reaction between 5-amino-6-D-ribitylaminouracil and glyoxal. It has a role as an antigen."}]