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The present study determined the anti - Mycobacterium tuberculosis activities of supercritical CO2 extracts , neolignans eupomatenoid - 5 ( 1 ) , conocarpan ( 4 ) and eupomatenoid - 3 ( 7 ) and their derivatives ( 2 , 3 , 5 , 6 , and 8 ) from Piper regnellii , as well as their cytotoxicities .
 Chemical: CO2; Chemical: neolignans; Chemical: eupomatenoid - 5; Chemical: conocarpan; Chemical: eupomatenoid - 3
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: CO2; Chemical: neolignans; Chemical: eupomatenoid - 5; Chemical: conocarpan; Chemical: eupomatenoid - 3