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: 1 of the 10 monkeys developed acute myeloblastic leukemia after receiving 324 mg / m2 of adriamycin ; the 10th monkey is alive and well 26 months after the last dose of drug .
### Output Text:
1 of the 10 monkeys developed acute myeloblastic leukemia after receiving 324 mg / m2 of <span class="chemical">adriamycin</span> ; the 10th monkey is alive and well 26 months after the last dose of drug . 