8722
These conjugates are synthesized by coupling antibodies to maleimide - functionalized poly ( N - ( 2 - hydroxypropyl ) - methacrylamide ) ( poly - HPMA ) copolymers derived through reversible addition - fragmentation chain transfer ( RAFT ) polymerization of pentafluorophenyl methacrylate via the intermediate step of an activated ester polymer .
 Chemical: maleimide; Chemical: poly ( N - ( 2 - hydroxypropyl ) - methacrylamide ); Chemical: poly - HPMA; Chemical: pentafluorophenyl methacrylate; Chemical: ester
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: maleimide, poly ( N - ( 2 - hydroxypropyl ) - methacrylamide ), poly - HPMA, pentafluorophenyl methacrylate, ester 
Answer:
 Chemical: maleimide; Chemical: poly ( N - ( 2 - hydroxypropyl ) - methacrylamide ); Chemical: poly - HPMA; Chemical: pentafluorophenyl methacrylate; Chemical: ester