InChI=1S/C26H48O4/c1-3-5-7-9-10-11-12-13-14-15-16-20-24-30-26(28)22-18-17-21-25(27)29-23-19-8-6-4-2/h5,7H,3-4,6,8-24H2,1-2H3/b7-5+