OntologieszpclassesCHEBI:57834   
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spermidine(3+)Imported
http://purl.obolibrary.org/obo/CHEBI_57834

An ammonium ion that is the trication of spermidine, formed by protonation at all three nitrogens.

Defined bychebi
Also appears infyposlmgouphenomco + 1