InChI=1S/C17H16O7S/c18-7-1-2-11-3-6-15-13(8-11)10-16(23-15)12-4-5-14(19)17(9-12)24-25(20,21)22/h3-6,8-10,18-19H,1-2,7H2,(H,20,21,22)