19900
Molecular modelling studies indicated potential binding conformations for the beta - lactam amino acid amides 10k and 11l in the colchicine - binding site of tubulin .
 Chemical: beta - lactam amino acid amides; Chemical: colchicine
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 - lactam amino acid amides; Chemical: colchicine