1,3-Dihydroxy-8-methyl-8,9,10,11-tetrahydro-5H-7-oxa-benzocyclodecene-6,12-dione 2H-3-benzoxecin-2,8(1H)-dione, 4,5,6,7-tetrahydro-9,11-dihydroxy-4-methyl- 9,11-dihydroxy-4-methyl-4,5,6,7-tetrahydro-2H-3-benzoxecine-2,8(1H)-dione InChI=1/C14H16O5/c1-8-3-2-4-11(16)14-9(6-13(18)19-8)5-10(15)7-12(14)17/h5,7-8,15,17H,2-4,6H2,1H Xestodecalactone A