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: Renal function significantly deteriorated in the group pretreated with furosemide ( p < 0 . 005 by ANOVA ) , with a rise in serum creatinine from 145 + / - 13 to 182 + / - 16 mumol / l at 24 h , while no change occurred in the control group ( from 141 + / - 6 to 142 + / - 7 mumol / l ) .
### Output Text:
Renal function significantly deteriorated in the group pretreated with <span class="chemical">furosemide</span> ( p < 0 . 005 by ANOVA ) , with a rise in serum <span class="chemical">creatinine</span> from 145 + / - 13 to 182 + / - 16 mumol / l at 24 h , while no change occurred in the control group ( from 141 + / - 6 to 142 + / - 7 mumol / l ) . 