17096
The benzo - b - acronycine derivative S23906 - 1 alkylates guanine nucleobases in the minor groove of the DNA helix and presents an original ability to locally open the double helix of DNA , which appears to be associated with its cytotoxic activity .
 Chemical: benzo - b - acronycine; Chemical: S23906 - 1; Chemical: guanine nucleobases
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: benzo - b - acronycine; Chemical: S23906 - 1; Chemical: guanine nucleobases