英文名称:2H-1-Benzopyran-6-carbonitrile,3,4-dihydro-3-hydroxy-2,2-dimethyl-4-[(2R)-2-methyl-5-oxo-1-pyrrolidinyl]-,(3R,4S)-; 2H-1-Benzopyran-6-carbonitrile,3,4-dihydro-3-hydroxy-2,2-dimethyl-4-(2-methyl-5-oxo-1-pyrrolidinyl)-, [3R-[3a,4b(R*)]]-; S 0121; S 0121 (pharmaceutical)