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The EO of A . porrum was characterized by the presence of dipropyl disulfide ( DPDS ) , dipropyl trisulfide , and dipropyl tetrasulfide .
 Chemical: dipropyl disulfide; Chemical: DPDS; Chemical: dipropyl trisulfide; Chemical: dipropyl tetrasulfide
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: dipropyl disulfide; Chemical: DPDS; Chemical: dipropyl trisulfide; Chemical: dipropyl tetrasulfide