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: Cardioprotective effect of ethanolic extract of Terminalia chebula fruits ( 500 mg / kg body wt ) was examined in isoproterenol ( 200 mg / kg body wt ) induced myocardial damage in rats .
### Output Text:
Cardioprotective effect of <span class="chemical">ethanolic extract of Terminalia chebula fruits</span> ( 500 mg / kg body wt ) was examined in <span class="chemical">isoproterenol</span> ( 200 mg / kg body wt ) induced myocardial damage in rats . 