Replace Duplicates with Blank Values while Keeping the First Instance

I need some help, I am using Excel 2021.

How can I replace duplicate values with blank cells while keeping the first instance of the cell as it is? It has some values under the "Clean Data (Extracted)" worksheet and I added the formula to extract the values inside the parentheses.

=LEFT(MID('Original Data'!H2,FIND("(",'Original Data'!H2)+1,LEN('Original Data'!H2)),FIND(")",MID('Original Data'!H2,FIND("(",'Original Data'!H2)+1,LEN('Original Data'!H2)))-1)

Please try in cell BI2 and copy down and right

Formula:

=IF(COUNTIF($H2:H2,H2)=1,H2,"")