(S)-columbianetin

(+)-Columbianetin, 2H-Furo(2,3-h)-1-benzopyran-2-one, 8,9-dihydro-8-(1-hydroxy-1-methylet hyl)-, (S)-, 2H-Furo[2,3-h]-1-benzopyran-2-one, 8,9-dihydro-8-(1-hydroxy-1-methylethyl)-, (S)-;