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: PURPOSE : The influence of an irreversible inhibitor of constitutive NO synthase ( L - NOArg ; 1 . 0 mg / kg ip ) , a relatively selective inhibitor of inducible NO synthase ( L - NIL ; 1 . 0 mg / kg ip ) and a relatively specific inhibitor of neuronal NO synthase ( 7 - NI ; 0 . 1 mg / kg ip ) , on antihyperalgesic action of selective antagonists of B2 and B1 receptors : D - Arg - [ Hyp3 , Thi5 , D - Tic7 , Oic8 ] bradykinin ( HOE 140 ; 70 nmol / kg ip ) or des Arg10 HOE 140 ( 70 nmol / kg ip ) respectively , in model of diabetic ( streptozotocin - induced ) and toxic ( vincristine - induced ) neuropathy was investigated .
### Output Text:
PURPOSE : The influence of an irreversible inhibitor of constitutive <span class="chemical">NO</span> synthase ( L - NOArg ; 1 . 0 mg / kg ip ) , a relatively selective inhibitor of inducible <span class="chemical">NO</span> synthase ( L - NIL ; 1 . 0 mg / kg ip ) and a relatively specific inhibitor of neuronal <span class="chemical">NO</span> synthase ( 7 - NI ; 0 . 1 mg / kg ip ) , on antihyperalgesic action of selective antagonists of B2 and B1 receptors : D - Arg - [ Hyp3 , Thi5 , D - Tic7 , Oic8 ] <span class="chemical">bradykinin</span> ( <span class="chemical">HOE 140</span> ; 70 nmol / kg ip ) or <span class="chemical">des Arg10 HOE 140</span> ( 70 nmol / kg ip ) respectively , in model of diabetic ( streptozotocin - induced ) and toxic ( vincristine - induced ) neuropathy was investigated . 