4298
The general formula of the OPCs was ( RO ) 2P ( O ) X , where R = alkyl , X = - SCH ( Hal ) COOEt ( Hal = Cl , Br ) , - SCHCl2 , - SCH2Br , - OCH ( CF3 ) R ( 1 ) ( R ( 1 ) = C6H5 , CF3 , COOEt , COOMe ) .
 Chemical: ( RO ) 2P ( O ) X; Chemical: alkyl; Chemical: SCH ( Hal ) COOEt; Chemical: Hal; Chemical: Cl; Chemical: Br; Chemical: SCHCl2; Chemical: SCH2Br; Chemical: OCH ( CF3 ) R ( 1 ); Chemical: C6H5; Chemical: CF3; Chemical: COOEt; Chemical: COOMe
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: ( RO ) 2P ( O ) X; Chemical: alkyl; Chemical: SCH ( Hal ) COOEt; Chemical: Hal; Chemical: Cl; Chemical: Br; Chemical: SCHCl2; Chemical: SCH2Br; Chemical: OCH ( CF3 ) R ( 1 ); Chemical: C6H5; Chemical: CF3; Chemical: COOEt; Chemical: COOMe