114915-74-1 7-(N-Acetyl,N-methylamino)-4,4a-dihydro-5H-indeno(1,2-c)pyridazin-3-one Acetamide, N-methyl-N-(3,4,4a,5-tetrahydro-3-oxo-2H-indeno(1,2-c)pyridazin-7-yl)- N-Methyl-N-(3,4,4a,5-tetrahydro-3-oxo-2H-indeno(1,2-c)pyridazin-7-yl)acetamide