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: The number of ECG abnormalities was zero in the Intralipid only group , but 14 and 17 , respectively , in the epinephrine and epinephrine plus lipid groups ( P < 0 . 05 ) .
### Output Text:
The number of ECG abnormalities was zero in the Intralipid only group , but 14 and 17 , respectively , in the <span class="chemical">epinephrine</span> and <span class="chemical">epinephrine</span> plus lipid groups ( P < 0 . 05 ) . 