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A	B	C	D	E	F
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4-Hydroxypropiophenone

3-Hydroxypropionitrile

trans-4-Hydroxy-L-proline methyl ester hydrochloride

L-Hydroxyproline

cis-4-Hydroxy-D-proline

trans-4-Hydroxy-D-proline

cis-4-Hydroxy-L-proline

Hydroxyprogesterone caproate

Hydroxyprogesterone acetate

Hydroxyprogesterone