13656
The synthesis and reversible addition - fragmentation chain transfer ( RAFT ) polymerization of amino acid - based chiral monomers , namely Boc - L - leucine methacryloyloxyethyl ester ( Boc - L - Leu - HEMA , 1a ) , Boc - L - leucine acryloyloxyethyl ester ( Boc - L - Leu - HEA , 1b ) , Boc - L - isoleucine methacryloyloxyethyl ester ( Boc - L - Ile - HEMA , 1c ) , and Boc - L - isoleucine acryloyloxyethyl ester ( Boc - L - Ile - HEA , 1d ) , are reported .
 Chemical: amino acid; Chemical: Boc - L - leucine methacryloyloxyethyl ester; Chemical: Boc - L - Leu - HEMA; Chemical: Boc - L - leucine acryloyloxyethyl ester; Chemical: Boc - L - Leu - HEA; Chemical: Boc - L - isoleucine methacryloyloxyethyl ester; Chemical: Boc - L - Ile - HEMA; Chemical: Boc - L - isoleucine acryloyloxyethyl ester; Chemical: Boc - L - Ile - HEA
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: amino acid; Chemical: Boc - L - leucine methacryloyloxyethyl ester; Chemical: Boc - L - Leu - HEMA; Chemical: Boc - L - leucine acryloyloxyethyl ester; Chemical: Boc - L - Leu - HEA; Chemical: Boc - L - isoleucine methacryloyloxyethyl ester; Chemical: Boc - L - Ile - HEMA; Chemical: Boc - L - isoleucine acryloyloxyethyl ester; Chemical: Boc - L - Ile - HEA