Fehler:
%5BCu%28NH3%294%5DSO4*H2O %3D H2O %2B NH3 %2B CuSO4
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Unerwartets Zeichen ('%')%5BCu%28NH3%294%5DSO4*H2O %3D H2O %2B NH3 %2B CuSO4
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Unerwartets Zeichen ('%')