2-[(3R)-2-[4-(4-dimethylaminophenyl)phenyl]sulfonyl-3,4-dihydro-1H-isoquinolin-3-yl]-2-oxoacetic acid 2-[(3R)-2-[4-(4-dimethylaminophenyl)phenyl]sulfonyl-3,4-dihydro-1H-isoquinolin-3-yl]-2-oxo-acetic acid 2-[(3R)-2-[4-(4-dimethylaminophenyl)phenyl]sulfonyl-3,4-dihydro-1H-isoquinolin-3-yl]-2-keto-acetic acid 2-[(3R)-2-[4-(4-dimethylaminophenyl)phenyl]sulfonyl-3,4-dihydro-1H-isoquinolin-3-yl]-2-oxo-ethanoic acid