14508
The A2A adenosine receptor agonist CGS21680 ( C23H29N7O6 . HCl . xH2O ) ( 0 . 001 - 0 . 1 mu M ) did not alter NE oxidation currents .
 Chemical: adenosine; Chemical: CGS21680; Chemical: C23H29N7O6 . HCl . xH2O
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: adenosine; Chemical: CGS21680; Chemical: C23H29N7O6 . HCl . xH2O