2H-1-benzopyran-2-one, 5,7-dihydroxy-4-[(1S)-1-hydroxypropyl]-6-(3-methyl-2-butenyl)-8-(2-methyl-1-oxobutyl)- 5,7-Dihydroxy-4-(1-hydroxy-propyl)-6-(3-methyl-but-2-enyl)-8-(2-methyl-butyryl)-chromen-2-one 5,7-dihydroxy-4-(1-hydroxypropyl)-8-(2-methylbutanoyl)-6-(3-methylbut-2-en-1-yl)-2H-chromen-2-one 9(S)-(-)-5,7-dihydroxy-4-(1-hydroxypropyl)-6-(3-methyl-but-2-enyl)-8-(2-methyl-1-oxo-butyl)-2H-benzopyran-2-one InChI=1/C22H28O6/c1-6-12(5)19(25)18-21(27)13(9-8-11(3)4)20(26)17-14(15(23)7-2)10-16(24)28-22(17)18/h8,10,12,15,23,26-27H,6-7,9H2,1-5H3/t12?,15-/m0/s Theraphin B