Error:
H2O2 %2B KMnO4 %2B H2SO4 %3D KHSO4 %2B MnSO4 %2B O2 %2B H2O
^Unexpected character ('%')H2O2 %2B KMnO4 %2B H2SO4 %3D KHSO4 %2B MnSO4 %2B O2 %2B H2O
^Unexpected character ('%')