Chemical substance (13)   
   PubChem (1)   
   ChEBI (1)   
   3DMET (1)   
   KNApSAcK (1)   
   MASSBANK (8)   
   NIKKAJI (1)   
Chemical reaction (4)   
   KEGG ENZYME (2)   
   KEGG REACTION (2)   
All databases (17)   

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