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The reactions of perchlorinated C4 species C4Cl5 , C4Cl3 , and C4Cl4 with C2Cl2 were subsequently explored through extensive kinetic simulations of the possible reaction pathways based on previous kinetic models and the exhaustive quantum chemical investigations of our preceding work .
 Chemical: perchlorinated C4; Chemical: C4Cl5; Chemical: C4Cl3; Chemical: C4Cl4; Chemical: C2Cl2
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: perchlorinated C4; Chemical: C4Cl5; Chemical: C4Cl3; Chemical: C4Cl4; Chemical: C2Cl2