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"structure_string": "Sm2 Fe2 As2 O2\n1.0\n3.950884 0.000000 0.000000\n0.000000 3.950884 0.000000\n0.000000 0.000000 8.286849\nSm Fe As O\n2 2 2 2\ndirect\n0.500000 0.000000 0.858167 Sm\n0.000000 0.500000 0.141833 Sm\n0.500000 0.500000 0.500000 Fe\n0.000000 0.000000 0.500000 Fe\n0.000000 0.500000 0.649177 As\n0.500000 0.000000 0.350823 As\n0.500000 0.500000 0.000000 O\n0.000000 0.000000 0.000000 O\n",
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