Use regex to find string between 1st and 2nd Comma in a string in C#

Question

I have a string as:

"8/4/2022 9:47:59 AM,Gerald Digat Denys,8/4/2022 9:47:59 AM,Updated,207190091504228,CD_CODE_GD,CD_CODE_GD,CD_DESC_GDxxy,"

I want to extract the name between 1st and 2nd comma(,) as: Gerald Digat Denys

I tried the following way:

Regex.Replace(str, @"[^,a-z, A-Z,]+", String.Empty).Replace(",", "").Trim().ToString();

which is giving incorrect result as:

"AMGerald Digat Denys Ugas  AMUpdatedCDCODEGDCDCODEGDCDDESCGDxxy"

What Am I missing in regex? or How can I achieve this?