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The aim of this work is the in vitro and ex vivo assessment of the leishmanicidal activity of camptothecin and three analogues used in cancer therapy : topotecan ( Hycantim ( (R) ) ) , gimatecan ( ST1481 ) and the pro - drug irinotecan ( Camptosar ( (R) ) ) as well as its active metabolite SN - 38 against Leishmania infantum .
 Chemical: camptothecin; Chemical: topotecan; Chemical: Hycantim; Chemical: gimatecan; Chemical: ST1481; Chemical: irinotecan; Chemical: Camptosar; Chemical: SN - 38
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: camptothecin; Chemical: topotecan; Chemical: Hycantim; Chemical: gimatecan; Chemical: ST1481; Chemical: irinotecan; Chemical: Camptosar; Chemical: SN - 38