21868
Construction of block copolymers for the coordinated delivery of doxorubicin and magnetite nanocubes .
 Chemical: doxorubicin; Chemical: magnetite
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: doxorubicin; Chemical: magnetite