1(2H)-Phthalazinone, 4-methyl-2-[5-[4-(2-methyl-1-oxopropyl)-1-piperazinyl]-2-nitrophenyl]-;2-[5-(4-Isobutyrylpiperazin-1-yl)-2-nitrophenyl]-4-methylphthalazin-1(2H)-one
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