21955
Redox - responsive amphiphilic diblock copolymers , poly ( 6 - O - methacryloyl - d - galactopyranose - co - 2 - ( N , N - dimethylaminoethyl ) methacrylate ) - b - poly ( pyridyl disulfide ethyl methylacrylate ) ( P ( MAGP - co - DMAEMA ) - b - PPDSMA ) were obtained by deprotection of poly ( ( 6 - O - methacryloyl - 1 , 2 : 3 , 4 - di - O - isopropylidene - d - galactopyranose ) - co - DMAEMA ) - b - PPDSMA [ P ( MAlpGP - co - DMAEMA ) - b - PPDSMA ] , which were prepared via reversible addition - fragmentation chain transfer ( RAFT ) polymerization of PDSMA using P ( MAlpGP - co - DMAEMA ) as macro - RAFT agent .
 Chemical: poly ( 6 - O - methacryloyl - d - galactopyranose - co - 2 - ( N , N - dimethylaminoethyl ) methacrylate ) - b - poly ( pyridyl disulfide ethyl methylacrylate ); Chemical: P ( MAGP - co - DMAEMA ) - b - PPDSMA; Chemical: poly ( ( 6 - O - methacryloyl - 1 , 2 : 3 , 4 - di - O - isopropylidene - d - galactopyranose ) - co - DMAEMA ) - b - PPDSMA; Chemical: P ( MAlpGP - co - DMAEMA ) - b - PPDSMA; Chemical: PDSMA; Chemical: P ( MAlpGP - co - DMAEMA )
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: poly ( 6 - O - methacryloyl - d - galactopyranose - co - 2 - ( N , N - dimethylaminoethyl ) methacrylate ) - b - poly ( pyridyl disulfide ethyl methylacrylate ); Chemical: P ( MAGP - co - DMAEMA ) - b - PPDSMA; Chemical: poly ( ( 6 - O - methacryloyl - 1 , 2 : 3 , 4 - di - O - isopropylidene - d - galactopyranose ) - co - DMAEMA ) - b - PPDSMA; Chemical: P ( MAlpGP - co - DMAEMA ) - b - PPDSMA; Chemical: PDSMA; Chemical: P ( MAlpGP - co - DMAEMA )