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keyword:Cyclic acid,Diphenylmethyl7-(3,5-di-tert-butyl-4-hydroxybenzylideneamino)-3-[[(1-methyl-1H-tetrazol-5-yl)thio]methyl]-3-cephem-4-carboxylate,Levofloxacin Lactate,Pivalaldehyde,Pyruvic aldehyde dimethyl acetal,Rifamycin-O,Rifaximin,
     
 


 
main product:　pivalaldehyde, rifamycin-o, rifaximin