2,5,8,22,25,28,34,35-Octaoxa-15-thia-30,31-diazatetracyclo(27.2.2.1(sup 10,13).1(sup 17,20))pentatriaconta-10,12,17,19,29,31,32-heptaene-9,21-dione 73823-27-5 BRN 1064317