请问这是什么数据结构，怎么把它转换为 json？

{ "root1" { "item1" "1" "item2" "abc"

	"item3"
	{
		"cell"
		{
			"cell1"
			{
				"cell1Name"	"99"
			}
			"cell2"
			{
				"cell2Name"	"cdb"
			}	
		}
	}
	
	"item4"	"valueI"
}

"root2"
{
	"item1"	"88"
	"item2"	"tg"
	
	"item3"
	{
		"cell"
		{
			"cell1"
			{
				"cell1Name"	"99"
			}
			"cell2"
			{
				"cell2Name"	"ujh"
			}
			
		}
	}
	
	"item4"	"valueb"
}

}