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: It was reported that there was a case of severe malaria patient with jaundice who presented with arrhythmia ( premature ventricular contraction ) while getting quinine infusion was reported .
### Output Text:
It was reported that there was a case of severe malaria patient with jaundice who presented with arrhythmia ( premature ventricular contraction ) while getting <span class="chemical">quinine</span> infusion was reported . 