3843
Methotrexate - conjugated and hyperbranched polyglycerol - grafted Fe 3 O 4 magnetic nanoparticles for targeted anticancer effects .
 Chemical: Methotrexate; Chemical: polyglycerol; Chemical: Fe 3 O 4
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: Methotrexate; Chemical: polyglycerol; Chemical: Fe 3 O 4