(2R)-Cyclohexyl[(3S,4S)-3-({4-[5-ethyl-3-(2-phenylethyl)-1H-pyrazol-1-yl]piperidin-1-yl}methyl)-4-phenylpyrrolidin-1-yl]acetic acid and (2R)-cyclohexyl[(3S,4S)-3-({4-[3-ethyl-5-(2-phenylethyl)-1H-pyrazol-1-yl]piperidin-1-yl}methyl)-4-phenylpyrrolidin-1-yl]acetic acid AIDS-193288 AIDS193288