... 19-trioxatetracyclo[15.6.1.14,8.020,24]pentacosa-10,14,16,22-tetraene-6-spiro-2'-(5',6'-dihydro ... 19-trioxatetracyclo[15.6.1.14,8.020,24]pentacosa-10,14,16,22-tetraene-6-spiro-2'-(5',6'-dihydro ... )52)59-39-22-37(54-10)44(31(8)57-39)60-38-21-36(53-9)41(50)30(7 ... (50)57-33)47(31,44)51)58-38-21-36(53-10)43(30(8)56-38)59-37-20-35 ... 31-13+/t25-,26+,28+,30+,31+,33-,34+,35+,36+,37+,38+,39+,40-,41+,42+,43-,44+,45-,47 ...