20193
Radiolabeling with fluorine - 18 ( ( 18 ) F ) facilitated production of 2 - ( 5 , 7 - diethyl - 2 - ( 4 - ( 2 - [ ( 18 ) F ] fluoroethoxy ) phenyl ) pyrazolo [ 1 , 5 - a ] pyrimidin - 3 - yl ) - N , N - diethylacetamide ( ( 18 ) F - 6b ) in high radiochemical yield and specific activity .
 Chemical: fluorine - 18; Chemical: ( 18 ) F; Chemical: 2 - ( 5 , 7 - diethyl - 2 - ( 4 - ( 2 - [ ( 18 ) F ] fluoroethoxy ) phenyl ) pyrazolo [ 1 , 5 - a ] pyrimidin - 3 - yl ) - N , N - diethylacetamide; Chemical: ( 18 ) F
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: fluorine - 18; Chemical: ( 18 ) F; Chemical: 2 - ( 5 , 7 - diethyl - 2 - ( 4 - ( 2 - [ ( 18 ) F ] fluoroethoxy ) phenyl ) pyrazolo [ 1 , 5 - a ] pyrimidin - 3 - yl ) - N , N - diethylacetamide; Chemical: ( 18 ) F