3351
The nanoparticles prepared from the new beta - cyclodextrin derivatives have been characterized by dynamic light scattering and have an average size of 120nm for the fluorinated derivatives and 220nm for the hydrogenated analogs .
 Chemical: beta - cyclodextrin
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: beta - cyclodextrin