17759
Simple physisorption by pi - pi stacking and hydrophobic interactions on GO - PDEA can be used to load camptothecin ( CPT ) , a widely used water - insoluble cancer drug .
 Chemical: GO - PDEA; Chemical: camptothecin; Chemical: CPT
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: GO - PDEA; Chemical: camptothecin; Chemical: CPT