(3s-trans)-yrrolidinyl)

(3β,4α)-3-Hydroxy-2,2-dimethyl-4-(2-oxopyrrolidin-1-yl)chroman-6-carbonitrile

2h-1-benzopyran-6-carbonitrile,3,4-dihydro-3-hydroxy-2,2-dimethyl-4-(2-oxo-1-p

(3S,4R)-3β-Hydroxy-4-(2-oxopyrrolizino)-2,2-dimethyl-3,4-dihydro-6-cyano-2H-1-benzopyran