Showing structure for 6-hydroxy-4-(1h-imidazol-4-ylmethylidene)-9-(2-methylbut-3-en-2-yl)-3-oxo-2,5,16-triazatetracyclo[7.7.0.0²,⁷.0¹⁰,¹⁵]hexadeca-5,10,12,14-tetraene-16-carbaldehyde