@fairymemay - Another solution…
"Suspend_de_20210613_175410.xlsx".Split("2"c)(0).trim("_"c)
Assuming you will get 2021 always
"Suspend_de_20210613_175410.xlsx".Split({"2021"},StringSplitOptions.None)(0).trim("_"c)
to make generalized
"Suspend_de_20210613_175410.xlsx".Split({now.year.tostring},StringSplitOptions.None)(0).trim("_"c)
Anil_G
ashokkarale
jinal.shah
Gautham_Pattabiraman
postwick
chandreshsinh.jadeja
vrdabberu
Ajay_Mishra
sven.wullum1
Vyshnavi_Nalumachu