4-[(9-ethyl-9H-carbazol-3-yl)methylene]-2-[4-(4-methylphenyl)-1,3-thiazol-2-yl]-5-(4-nitrophenyl)-2,4-dihydro-3H-pyrazol-3-on : Aronis compounds, collection of screening compounds for high throughput screening, building blocks and fine organic compound samples, custom synthesis