for the following products
(2S,4R)-1-((9H-Fluoren-9-yl)methyl) 2-methyl 4-hydroxypyrrolidine-1,2-dicarboxylate | (2S,4R)-4-Hydroxy-1,2-pyrrolidinedicarboxylic acid 1-(9H-fluoren-9-ylmethyl) 2-methyl ester and N-Fmoc-trans-4-Hydroxy-L-proline methyl ester
