{
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            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
            "O"
        ]
    }
    "a" {
        "source-value" 13.89780649
        "source-unit" "angstrom"
    }
    "cohesive-potential-energy" {
        "source-value" 6.221444259655173
        "source-unit" "eV"
    }
}