InChI=1S/C23H28O5/c1-17(9-6-12-19(3)22(26)27-5)10-7-13-20-23(4,28-20)16-8-11-18(2)14-15-21(24)25/h6-16,20H,1-5H3,(H,24,25)/b9-6+,13-7+,15-14+,16-8+,17-10+,18-11+,19-12+