InChI=1S/C28H48O/c1-18(2)19(3)7-8-20(4)24-11-12-25-23-10-9-21-17-22(29)13-15-27(21,5)26(23)14-16-28(24,25)6/h7,18,20-26,29H,8-17H2,1-6H3/b19-7+/t20-,21?,22+,23?,24?,25?,26?,27+,28-/m1/s1