S(=O)(=O)(O)OC1CC2OC3CC4OC5CCC6(C)OC7(C)CCC(C)C8OC9C(CC8OC7CC6OC5CC4OC3CC2OC1(C)CCCOS(=O)(=O)O)OC%10CC%11OC(C(=C)CC%11OC%10(C)C9O)C(O)(C)C=CC(=C)CC=C