28437
To stabilize such micelles and increase their loading capacity for chemotherapeutic drugs , block copolymers with novel aromatic monomers were synthesized by free radical polymerization of N - ( 2 - benzoyloxypropyl methacrylamide ( HPMAm - Bz ) or the corresponding naphthoyl analogue ( HPMAm - Nt ) , with N - ( 2 - hydroxypropyl ) methacrylamide monolactate , using a polyethylene glycol based macroinitiator .
 N - ( 2 - benzoyloxypropyl methacrylamide, naphthoyl, N - ( 2 - hydroxypropyl ) methacrylamide monolactate, polyethylene glycol
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 N - ( 2 - benzoyloxypropyl methacrylamide, naphthoyl, N - ( 2 - hydroxypropyl ) methacrylamide monolactate, polyethylene glycol