2-(1-Acetyl-2,2,6,6-tetramethylpiperidin-4-oxy)-4-(1-hydroxyl-2,2,6,6-tetramethylpiperidin-4-oxy)-6-(2,2,6,6-tetramethylpiperidin-1-yl)-1,3,5-triazine (HCID 19991782)|Huagongshe