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: Moreover , M ( 3 ) - muscarinic acetylcholine receptor ( mAChR ) antagonist 4 - DAMP ( 4 - diphenylacetoxy - N - methylpiperidine - methiodide ) partially abolished the beneficial effects of pilocarpine .
### Output Text:
Moreover , M ( 3 ) - muscarinic <span class="chemical">acetylcholine</span> receptor ( mAChR ) antagonist <span class="chemical">4 - DAMP</span> ( <span class="chemical">4 - diphenylacetoxy - N - methylpiperidine - methiodide</span> ) partially abolished the beneficial effects of <span class="chemical">pilocarpine</span> . 