c1cc(cc2c1cc(cc2)Cl)S(=O)(=O)C[C@H](C(=O)N3CCC(CC3)N4CCCNC4=O)O 443_1_3KL6 1-[1-[(2S)-3-[(6-chloro-2-naphthyl)sulfonyl]-2-hydroxy-propanoyl]-4-piperidyl]hexahydropyrimidin-2-one