Showing structure for (28e)-28,37-diethylidene-8,14,24,30-tetraazaundecacyclo[25.5.2.2¹¹,¹⁴.1¹,⁸.1¹⁰,¹⁷.0²,⁷.0¹³,¹⁷.0¹⁸,²³.0³⁰,³³.0²⁴,³⁵.0²⁶,³⁸]octatriaconta-2,4,6,9,18,20,22,25-octaene