In the sentence extracted from biomedical literature, identify all the chemical entities. The required answer format is the same sentence with HTML <span> tags to mark up specific entities. 
### Entity Markup Guides:
Use <span class="chemical"> to denote a chemical.

### Input Text: Factors associated with the development of fulminant hepatic failure were female sex ( OR = 25 ; 95 % CI : 4 . 1 - 151 ; P < . 0001 ) , hepatocellular damage ( OR = 7 . 9 ; 95 % CI : 1 . 6 - 37 ; P < . 009 ) , and higher baseline plasma bilirubin value ( OR = 1 . 15 ; 95 % CI : 1 . 09 - 1 . 22 ; P < . 0001 ) .
### Output Text:
Factors associated with the development of fulminant hepatic failure were female sex ( OR = 25 ; 95 % CI : 4 . 1 - 151 ; P < . 0001 ) , hepatocellular damage ( OR = 7 . 9 ; 95 % CI : 1 . 6 - 37 ; P < . 009 ) , and higher baseline plasma <span class="chemical">bilirubin</span> value ( OR = 1 . 15 ; 95 % CI : 1 . 09 - 1 . 22 ; P < . 0001 ) . 