20791
Melanoma targeting property of a Lu - 177 - labeled lactam bridge - cyclized alpha - MSH peptide .
 Chemical: Lu - 177; Chemical: lactam
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: Lu - 177; Chemical: lactam