8833
A novel glycodendrimer based on 18 peripheral alpha - D - mannoses functionalized perylene bisimide derivative PBI - 18 - Man was synthesized and its selectively binding interactions for Con A were investigated by CD spectra and turbidity assay , which exhibited strong binding affinity for Con A with the binding constant of 1 . 3 x 10 ( 8 ) M ( - 1 ) ( 7 . 2 x 10 ( 6 ) M ( - 1 ) for monomeric mannose , valency corrected ) , 3 orders of magnitude higher affinity than the monovalent mannose ligand .
 alpha - D - mannoses, perylene, PBI - 18 - Man, mannose, mannose
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 alpha - D - mannoses, perylene, PBI - 18 - Man, mannose, mannose