label: 3,4-dihydroxy-2-[(methylsulfanyl)methyl]-5-(4-oxo-4,5-dihydro-3H-pyrrolo[3,2-d]pyrimidin-7-yl)pyrrolidinium
label_lc: 3,4-dihydroxy-2-[(methylsulfanyl)methyl]-5-(4-oxo-4,5-dihydro-3h-pyrrolo[3,2-d]pyrimidin-7-yl)pyrrolidinium