1 3V5 (3s,5s)-3-({[(aminomethyl)amino]methyl}sulfanyl)-5-[(2s)-1,3-dioxobutan-2-yl]-L-proline 1.000 2 6B8 (2s,3r,4r)-2-[(2s,3r)-3-hydroxy-1-oxobutan-2-yl]-3-methyl-4-(methylsulfanyl)-3,4-dihydro-2h-pyrrole-5-carboxylic acid 0.800