Chain identifier should be blank not A: ATOM   5885 ZN    ZN A 776      61.070 246.500 148.730 21.00 20.50      A   ZN  
Chain identifier should be blank not B: ATOM   5901 ZN    ZN B 777      90.120 377.130 953.560 71.00 29.90      B   ZN  
Chain identifier should be blank not C: ATOM   5918 ZN    ZN C 778      32.440 735.520 953.680 81.00 29.70      C   ZN  
Chain identifier should be blank not B: ATOM   5902 ZN    ZN B 779      73.980 190.780 959.420 71.00 20.10      B   ZN  
Chain identifier should be blank not C: ATOM   5919 ZN    ZN C 780      62.220  36.530 448.650 81.00 55.20      C   ZN  

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