The molecule is a pyridinium ion having methyl and 2-hydroxyethyl groups at positions 2 and 3 respectively as well as a 4-hydroxy-2-methylpyrimid-5-ylmethyl attached to the nitrogen.
5-[[3-(2-hydroxyethyl)-2-methylpyridin-1-ium-1-yl]methyl]-2-methyl-1H-pyrimidin-6-one