6235
Both nucleosides were synthesized from condensation of 5 - amino - 2 ' - deoxycytidine with the corresponding diketone .
 5 - amino - 2 ' - deoxycytidine, diketone
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 5 - amino - 2 ' - deoxycytidine, diketone