... ,13,22-tetramethyl-2-oxo-3,7,19-trioxatetracyclo[15.6.1.14,8.020,24]pentacosa-10,14 ... ,13,22-tetramethyl-2-oxo-3,7,19-trioxatetracyclo[15.6.1.14,8.020,24]pentacosa-10,14 ... /C48H72O14.C47H70O14/c1-11-25(2)43-28(5)17-18-47(62-43)23-34-20-33(61 ... -47)16-15-27(4)42(26(3)13-12-14-32 ... -38;1-24(2)41-27(5)16-17-46(61-41)22-33-19-32(60-46 ... (52-9)40(49)29(7)55-37/h12-15,17-19,25-26,28,30-31,33-45,49 ...