toolic's point is that it's impossible unless you tell us what special about the indicated points

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C:\fldr1\fld2\fldr3\fldr4\fldr5\test.txt@@\main\Msometest\test12.1x\1
[download]

For instance, how do you know it's not

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C:\fldr1\fld2\fldr3\fldr4\fldr5\test.txt@@\main\Msometest\test12.1x\1
[download]

or

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C:\fldr1\fld2\fldr3\fldr4\fldr5\test.txt@@\main\Msometest\test12.1x\1
[download]