3-((3,5-Bis(trifluoromethyl)phenyl)amino)-4-(((1S,2S)-2-(pyrrolidin-1-yl)cyclohexyl)amino)cyclobut-3-ene-1,2-dione

3-((3,5-Bis(trifluoromethyl)phenyl)amino)-4-(((1R,2R)-2-(dimethylamino)-1,2-diphenylethyl)amino)cyclobut-3-ene-1,2-dione

3-(3,5-Bis(trifluoromethyl)phenylamino)-4-((1R,2R)-1,2-diphenyl-2-(piperidin-1-yl)ethylamino)cyclobut-3-ene-1,2-dione

3-((3,5-Bis(trifluoromethyl)phenyl)amino)-4-(((1R,2R)-2-(dimethylamino)cyclohexyl)amino)cyclobut-3-ene-1,2-dione

3-((3,5-Bis(trifluoromethyl)phenyl)amino)-4-(((1S,2S)-2-(dimethylamino)cyclohexyl)amino)cyclobut-3-ene-1,2-dione

(S)-3-((3,5-Bis(trifluoromethyl)phenyl)amino)-4-((pyrrolidin-2-ylmethyl)amino)cyclobut-3-ene-1,2-dione

3-((3,5-Bis(trifluoromethyl)phenyl)amino)-4-(((R)-(6-methoxyquinolin-4-yl)((1S,2R,4S,5R)-5-vinylquinuclidin-2-yl)methyl)amino)cyclobut-3-ene-1,2-dione

3-[[3,5-Bis(trifluoromethyl)phenyl]amino]-4-[[(8α,9S)-6'-methoxycinchonan-9-yl]amino]-3-cyclobutene-1,2-dione

3-[[3,5-Bis(trifluoromethyl)phenyl]amino]-4-[[(8α,9S)-10,11-dihydro-6'-methoxycinchonan-9-yl]amino]-3-cyclobutene-1,2-dione

(R)-2-Amino-3,3-dimethyl-N-2-pyridinylbutanamide