14645
In contrast , the I ( 2 ) receptor agonist , 2 - BFI ( 5 mg / kg ) and I ( 1 ) receptor agonist , moxonidine ( 0 . 4 mg / kg ) alone , or a combination of their subeffective doses , significantly attenuated the effect of agmatine ( 20 mg / kg ) on acquisition of ethanol CPP .
 Chemical: 2 - BFI; Chemical: moxonidine; Chemical: agmatine; Chemical: ethanol
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: 2 - BFI; Chemical: moxonidine; Chemical: agmatine; Chemical: ethanol