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The present study is to investigate the effects of in utero di - n - hexyl phthalate ( DHP ) and dicyclohexyl phthalate exposure ( DCHP ) on the development of male reproductive tract at prepubertal , pubertal and adult stages .
 Chemical: di - n - hexyl phthalate; Chemical: DHP; Chemical: dicyclohexyl phthalate; Chemical: DCHP
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: di - n - hexyl phthalate; Chemical: DHP; Chemical: dicyclohexyl phthalate; Chemical: DCHP