Showing structure for (1r,9s,21s)-6,18-dioxo-7,11,19,23-tetraazapentacyclo[19.3.1.1⁹,¹³.0²,⁷.0¹⁴,¹⁹]hexacosa-2,4,14,16-tetraene-11,23-dicarbaldehyde