InChI=1S/C12H14O12/c13-4(14)1-3(2-5(15)16)11(22)24-12-8(19)6(17)7(18)9(23-12)10(20)21/h1,6-9,12,17-19H,2H2,(H,13,14)(H,15,16)(H,20,21)/b3-1-