1 LLN (4~{a}~{S},8~{a}~{R})-2-cycloheptyl-4-[4-(2-hydroxyethyloxy)-3-[2-(2-oxidanylideneimidazolidin-1-yl)ethoxy]phenyl]-4~{a},5,8,8~{a}-tetrahydrophthalazin-1-one 1.000 2 LLI (4~{a}~{S},8~{a}~{R})-2-cycloheptyl-4-[4-methoxy-3-[2-(2-oxidanylideneimidazolidin-1-yl)ethoxy]phenyl]-4~{a},5,8,8~{a}-tetrahydrophthalazin-1-one 0.946