(
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    cell: (
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        inv_matrix: [0.05882353,0,0,0.000000002571258,0.05882353,0,0.0000000025712583,0.0000000025712583,0.05882353],
    ),
    elements: [
        Ar,
        Ar,
    ],
    molecules: [
        0,
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    ],
    positions: [
        [0,0,0],
        [3.4,3.4,3.4],
    ],
    velocities: [
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    ],
    masses: [
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    charges: [
        0,
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    ],
    bonds: [],
    angles: [],
    dihedrals: [],
)