. "17,20,23,26,29-pentaoxa-4,14,32-triazahexacyclo[30.6.1.17,14.02,6.08,13.033,38]tetraconta-1(39),2(6),7(40),8,10,12,33,35,37-nonaene-3,5-dione" . "13" . . . . .