CC1C(C)C2(CC(O)CO2)OC2C1OC1CC3OC4CC5OC6C\C=C/CC7OC8C=CC9OC%10C(CC9OC8C=CC7OC6CC(O)C5(C)OC4CC(C)CC3OC1C(C)C2O)OC1CC=CC(OC1C%10O)\C=C/C(O)CO