13277
Backbone degradable , linear , multiblock N - ( 2 - hydroxypropyl ) methacrylamide ( HPMA ) copolymer - doxorubicin ( DOX ) conjugates are synthesized by reversible addition - fragmentation chain transfer ( RAFT ) polymerization followed by chain extension via thiol - ene click reaction .
 Chemical: N - ( 2 - hydroxypropyl ) methacrylamide; Chemical: HPMA; Chemical: doxorubicin; Chemical: DOX; Chemical: thiol
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: N - ( 2 - hydroxypropyl ) methacrylamide; Chemical: HPMA; Chemical: doxorubicin; Chemical: DOX; Chemical: thiol