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: Of 158 asthmatic patients who were placed on inhaled beclomethasone , 15 ( 9 . 5 % ) developed either hoarseness ( 8 ) , oral thrush ( 6 ) , or both ( 1 ) .
### Output Text:
Of 158 asthmatic patients who were placed on inhaled <span class="chemical">beclomethasone</span> , 15 ( 9 . 5 % ) developed either hoarseness ( 8 ) , oral thrush ( 6 ) , or both ( 1 ) . 