2',3'-Epoxyisocapnolactone 4H-1-benzopyran-4-one, 2-(3,4-dihydroxyphenyl)-7,8-dihydroxy-3,5-dimethoxy- 7-[((2S,3S)-3-methyl-3-{[(2S)-4-methylene-5-oxotetrahydrofuran-2-yl]methyl}oxiran-2-yl)methoxy]-2H-chromen-2-one (non-preferred name) 7-[3-Methyl-3-(3-methylene-4-oxo-cyclopentylmethyl)-oxiranylmethoxy]-chromen-2-one InChI=1/C19H18O6/c1-11-7-14(23-18(11)21)9-19(2)16(25-19)10-22-13-5-3-12-4-6-17(20)24-15(12)8-13/h3-6,8,14,16H,1,7,9-10H2,2H3/t14-,16-,19-/m0/s