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2-HYDROXY-1-(2-HYDROXY-ETHYL)-4-METHYL-6-OXO-1,6-DIHYDRO-PYRIDINE-3-CARBONITRILE 2-HYDROXY-1-(2-HYDROXY-ETHYL)-4-METHYL-6-OXO-1,6-DIHYDRO-PYRIDINE-3-CARBONITRILE