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We found that three out of the twelve stemofoline derivatives including OH - A1 , NH - B6 and NH - D6 showed commitment efficiency to increase sensitivity to doxorubicin , vinblastine and paclitaxel in KB - V1 cells and increase sensitivity to doxorubicin , and paclitaxel in K562 / Adr cells whereas the effects have not been seen in their parental sensitive cancer cell lines ( KB - 3 - 1 and K562 ) .
 Chemical: stemofoline; Chemical: OH - A1; Chemical: NH - B6; Chemical: NH - D6; Chemical: doxorubicin; Chemical: vinblastine; Chemical: paclitaxel; Chemical: doxorubicin; Chemical: paclitaxel
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: stemofoline; Chemical: OH - A1; Chemical: NH - B6; Chemical: NH - D6; Chemical: doxorubicin; Chemical: vinblastine; Chemical: paclitaxel; Chemical: doxorubicin; Chemical: paclitaxel