3790
The crystal structure of human telomeric DNA complexed with berberine : an interesting case of stacked ligand to G - tetrad ratio higher than 1 : 1 .
 Chemical: berberine
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: berberine