Showing structure for (1s,9r,13s,21r)-10,22-dimethyl-8,10,20,22-tetraazahexacyclo[11.11.0.0¹,²¹.0²,⁷.0⁹,¹³.0¹⁴,¹⁹]tetracosa-2,4,6,14,16,18-hexaene