583
The analogs tested were : 11 - ketopregnenolone sulphate ( an agent that is inactive at GABA ( A ) Rs and NMDARs ) , epipregnanolone ( [ 3beta - hydroxy - 5beta - pregnan - 20 - one ] sulphate , an inhibitor of both GABA ( A ) Rs and NMDARs ) , and a newly synthesized ( - ) PREGS enantiomer ( which is identical to PREGS in effects on GABA ( A ) Rs and NMDARs ) .
 Chemical: 11 - ketopregnenolone sulphate; Chemical: GABA; Chemical: epipregnanolone ( [ 3beta - hydroxy - 5beta - pregnan - 20 - one ] sulphate; Chemical: GABA; Chemical: PREGS; Chemical: PREGS; Chemical: GABA
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: 11 - ketopregnenolone sulphate; Chemical: GABA; Chemical: epipregnanolone ( [ 3beta - hydroxy - 5beta - pregnan - 20 - one ] sulphate; Chemical: GABA; Chemical: PREGS; Chemical: PREGS; Chemical: GABA