Help RegularExpressions.Regex

[punnipah]

@punnipah

System.Text.RegularExpressions.Regex.Matches(Currentitem.Subject.toString,“(?<=LCM-)(.)(:)(?=Extral)”)(0).ToString.Replace(" “,”")

the sample
Memo number STO 00835/2022(1) Subject LCM-C Extralxxxxx
Memo number STO 00835/2022(1) Subject LCM-C Starxxxxx

expected output
LCM-C Extral
LCM-C Star