1 885 1-[(2-amino-4-chloro-5-methylphenyl)sulfonyl]-L-proline 1.000 2 TPR Tosyl-D-proline 0.810 3 A1A47 1-[(1r,6s,8r)-8lambda~4~-thia-7,9-diazatetracyclo[4.3.0.0~1,8~.0~6,8~]nona-2,4-diene-2-sulfonyl]-L-proline 0.739