1 PZY 2-[({4-[(4-tert-butylphenyl)methyl]piperazin-1-yl}sulfonyl)amino]-5-[(2-phenylethyl)sulfanyl]benzoic acid 1.000 2 Q0A 2-[({4-[(4-fluorophenyl)methyl]piperazin-1-yl}sulfonyl)amino]-5-[(2-phenylethyl)sulfanyl]benzoic acid 0.875