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: This cardioprotection is accompanied by decreased cardiac oxidative stress and triglycerides and increased cardiac fatty - acid oxidation , ATP synthesis , and upregulated JAK / STAT3 pathway .
### Output Text:
This cardioprotection is accompanied by decreased cardiac oxidative stress and <span class="chemical">triglycerides</span> and increased cardiac fatty - acid oxidation , <span class="chemical">ATP</span> synthesis , and upregulated JAK / STAT3 pathway . 