I need to get a spesific string Iin between filepath

[Gokul001 (Gokul Balaji)]

HI @Ahmad_Rais

system.Text.RegularExpressions.Regex.Match("aaaaa\afq3\aveav32\aef2**This is the strting i want234**4.msg","(?=This).*(?=.msg)").Tostring