6-Hydroxy-2-oxo-1,2,3,4-tetrahydroquinoline3,4-Dihydro-6-hydroxyquinolin-2(1H)-one6-hydroxy-3,4-dihydroquinolin-2(1H)-one6-羟基-1,2,3,4-四氢-2-喹啉酮6-Hydroxy-1,2,3,4-tetrahydro-2-quinolinone6-羟基-3,4-二氢-2(1H)-喹诺酮6-羟基-3,4-二氢喹啉酮6-Hydroxy-3,4-dihydro-2(1H)-quinolinone6-Hydroxy-3,4-dihydrocarbstyril6-Hydroxy-3,4-dihydro-1H-quinoline-2-one3,4-Dihydro-6-hydroxycarbostyril3,4-Dihydro-6-hydroxy-carbostyril3,4-Dihydro-6-hydroxy-2(1H)-quinolinone