6431
In summary , the results indicate that galantamine binding to amyloid peptide dimer leads to a significant conformational change at the turn region ( Asp23 - Gly29 ) that disrupts interactions between individual beta - strands and promotes a nontoxic conformation of A beta ( 1 - 40 ) to prevent the formation of neurotoxic oligomers .
 Chemical: galantamine; Chemical: Asp23; Chemical: Gly29
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: galantamine; Chemical: Asp23; Chemical: Gly29