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SPIROFLUORENE DERIVATIVE, MATERIAL FOR LIGHT-EMITTING ELEMENT, LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, AND ELECTRONIC DEVICE - diagram, schematic, and image 23


SPIROFLUORENE DERIVATIVE, MATERIAL FOR LIGHT-EMITTING ELEMENT,     LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, AND ELECTRONIC DEVICE - diagram, schematic, and image 23

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