125068-43-1 3(2H)-Pyridazinone, 4,5-dihydro-6-(4-((2-methyl-3-oxo-1-cyclopenten-1-yl)amino)phenyl)- 4,5-Dihydro-6-(4-((2-methyl-3-oxo-1-cyclopentenyl)amino)phenyl)-3(2H)-pyridazinone Nsp 804 Nsp-804