InChI=1S/C36H58O4/c1-30(25-26-33-32(3)22-19-28-36(33,4)5)20-18-21-31(2)27-29-40-35(39)24-17-15-13-11-9-7-6-8-10-12-14-16-23-34(37)38/h18,20-21,25-27H,6-17,19,22-24,28-29H2,1-5H3,(H,37,38)/b21-18?,26-25+,30-20?,31-27?