1 ZST 3,4-dihydro-4-oxo-3-((5-trifluoromethyl-2-benzothiazolyl)methyl)-1-phthalazine acetic acid 1.000 2 XYK (4-oxo-3-{[5-(trifluoromethyl)-1,3-benzothiazol-2-yl]methyl}-3,4-dihydrothieno[3,4-D]pyridazin-1-yl)acetic acid 0.900 3 XXQ (8-oxo-7-{[5-(trifluoromethyl)-1,3-benzothiazol-2-yl]methyl}-7,8-dihydropyrazino[2,3-D]pyridazin-5-yl)acetic acid 0.758