9717
Preliminary structure - activity relationship investigation identified essentiality of the spermine polyamine core and the requirement for 1 , 14 - disubstitution for potent activity .
 Chemical: spermine; Chemical: polyamine
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: spermine; Chemical: polyamine