22959
When the cluster ions react at room temperature , a CO molecule tends to attach readily to NinOn + x ( + ) for all of the cluster ions with different stoichiometry , although rate constants of the CO attachment reaction are more or less stoichiometry - dependent .
 Chemical: CO; Chemical: NinOn + x ( + ); Chemical: CO
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: CO; Chemical: NinOn + x ( + ); Chemical: CO