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In rodents , the effect of the beta - carboline derivative isopropyl - 6 - benzyloxy - 4 - methoxymethyl - beta - carboline - 3 - carboxylate ( abecarrnil ) , a new ligand for benzodiazepine receptors possessing anxiolytic and anticonvulsant properties , was evaluated on the function of central gamma - aminobutyric acid ( GABA ) A receptor complex , both in vitro and in vivo .
 Chemical: beta - carboline; Chemical: isopropyl - 6 - benzyloxy - 4 - methoxymethyl - beta - carboline - 3 - carboxylate; Chemical: abecarrnil; Chemical: benzodiazepine; Chemical: gamma - aminobutyric acid; 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: beta - carboline; Chemical: isopropyl - 6 - benzyloxy - 4 - methoxymethyl - beta - carboline - 3 - carboxylate; Chemical: abecarrnil; Chemical: benzodiazepine; Chemical: gamma - aminobutyric acid; Chemical: GABA