N-acetyl-N-(6-bromo-5-(bromomethyl)-3,7-bis(methoxymethyl)-4-oxo-4,7-dihydro-3H-pyrrolo[2,3-d]pyrimidin-2-yl)acetamide

3,4-dihydro-5-methyl-2-methylthio-7H-pyrrolo[2,3-d]pyrimidin-4-one