InChI=1S/C16H20O12/c17-8-9(18)11(13(22)23)28-15(10(8)19)27-4-16(25)2-1-5-6(12(20)21)3-26-14(24)7(5)16/h1-3,5,7-11,14-15,17-19,24-25H,4H2,(H,20,21)(H,22,23)