IUPAC:1-[4-(2-chloro-6-fluorophenoxy)-8-fluoro-5-{[(2S)-1,1,1-trifluoropropan-2-yl]oxy}pyrido[3,4-d]pyridazin-7-yl]-4-ethyl-3-(hydroxymethyl)-4,5-dihydro-1H-1,2,4-triazol-5-one
IUPAC:1-[4-(2-chloro-6-fluorophenoxy)-8-fluoro-5-{[(2S)-1,1,1-trifluoropropan-2-yl]oxy}pyrido[3,4-d]pyridazin-7-yl]-4-ethyl-3-(hydroxymethyl)-4,5-dihydro-1H-1,2,4-triazol-5-one