InChI=1S/C23H38O5/c1-2-3-4-5-6-7-8-10-13-16-21(25)17-14-11-9-12-15-18-23(27)28-20-22(26)19-24/h6-7,9-11,13-14,17,21-22,24-26H,2-5,8,12,15-16,18-20H2,1H3/b7-6-,11-9+,13-10-,17-14-/t21?,22-/m0/s1