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Antifouling zwitterionic SS - PMPC surface was prepared by thiol - ene photopolymerization of 2 - methacryloyloxyethyl phosphorylcholine ( MPC ) from the SS - thiol surface .
 Chemical: thiol; Chemical: 2 - methacryloyloxyethyl phosphorylcholine; Chemical: MPC; Chemical: thiol
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: thiol; Chemical: 2 - methacryloyloxyethyl phosphorylcholine; Chemical: MPC; Chemical: thiol