11523
Interaction between group IIb divalent transition - metal cations and 3 - mercaptopropionic acid : a computational and topological perspective .
 Chemical: group IIb divalent transition - metal; Chemical: 3 - mercaptopropionic acid
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: group IIb divalent transition - metal; Chemical: 3 - mercaptopropionic acid