How to clean up the converted Json string from non Json ansi characters in Ms Access VBA

Is it possible to Trim the first 4 characters & the second last from the Json string below, the idea here is to remain with pure json, so that if I fail to iterate it , then I can have it printed and posted to the table manually.(Characters not required are  ]    j  and 4c)
Below is the Ms Access VBA code that takes it to text file , but not fully cleaned up.

Text file Export VBA

n = FreeFile()
    Open "C:\Users\chris.hankwembo\Desktop\Leader\test.txt" For Output As #n
    Print #n, strData
    Close #n

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Json String

 ]    j{
   "PosVendor": "Nector Prime Accounting Solutions",
   "PosSoftwareVersion": "2.0.0.1",
   "PosModel": "Cap-2017",
   "PosSerialNumber": "100100001829",
   "IssueTime": "20200326115321",
   "TransactionType": 0,
   "PaymentMode": 0,
   "SaleType": 0,
   "LocalPurchaseOrder": "",
   "Cashier": "Admin Manager",
   "BuyerTPIN": "",
   "BuyerName": "",
   "BuyerTaxAccountName": "",
   "BuyerAddress": "",
   "BuyerTel": "",
   "OriginalInvoiceCode": "",
   "OriginalInvoiceNumber": "",
   "Memo": "",
   "Items": [
      {
         "ItemId": 1,
         "Description": "Cleaning Materials",
         "BarCode": 19,
         "Quantity": 1,
         "UnitPrice": 56,
         "Discount": 0,
         "TaxLabels": [
            "A"
         ],
         "TotalAmount": 64.96,
         "IsTaxInclusive": true,
         "RRP": 0
      }
   ]
}4c

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