Synonyms: LEVCROMAKALIM;(3S,4R)-3,4-DIHYDRO-3-HYDROXY-2,2-DIMETHYL-4-(2-OXO-1-PYRROLIDINYL)-2H-1-BENZOPYRAN-6-CARBONITRILE;(3s-trans)-yrrolidinyl);2h-1-benzopyran-6-carbonitrile,3,4-dihydro-3-hydroxy-2,2-dimethyl-4-(2-oxo-1-p;brl38227;lemakalim;levcromakelim;(3S,4R)-3β-Hydroxy-4-(2-oxopyrrolizino)-2,2-dimethyl-3,4-dihydro-6-cyano-2H-1-benzopyran