9279
First , a multiblock backbone biodegradable N - ( 2 - hydroxypropyl ) methacrylamide ( HPMA ) copolymer - PTX conjugate ( mP - PTX ) with molecular weight ( Mw ) of 335 kDa was synthesized by RAFT ( reversible addition - fragmentation chain transfer ) copolymerization , followed by chain extension .
 Chemical: N - ( 2 - hydroxypropyl ) methacrylamide; Chemical: HPMA; Chemical: PTX; Chemical: PTX
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: PTX; Chemical: PTX