1 JI7 N-{(3r,4s)-4-[(6-amino-4-methylpyridin-2-yl)methyl]pyrrolidin-3-yl}-N'-(3-chlorobenzyl)ethane-1,2-diamine 1.000 2 JI3 N-{(3s,4s)-4-[(6-amino-4-methylpyridin-2-yl)methyl]pyrrolidin-3-yl}-N'-(4-chlorobenzyl)ethane-1,2-diamine 0.926