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A	B	C	D	E	F
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M	N	O	P	Q	R
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2-N-Boc-amino-3-formylpyridine

(S)-N-Boc-2-amino-3,3-diphenylpropionic acid

N-1-Boc-amino-3-cyclopentene

(R)-N-Boc-2-amino-3,3-diphenylpropionic acid

1-(Boc-amino)cyclopropanecarboxylic acid

Boc-(S)-3-Amino-3-(4-chlorophenyl)propionic acid

1-N-Boc-Aminocyclopentanecarboxylic acid

4-N-Boc-aminocyclohexanone

N-Boc-1-aminocyclobutanecarboxylic acid

Boc-(R)-3-Amino-3-(4-chlorophenyl)propionic acid