If A1 contains the original information:
A1= as25(nec20)
B1= =FIND("(",A1)
C1= =LEFT(A1,B1-1)
D1= =FIND(")",A1)
E1= =MID(A1,B1+1,(D1-B1)-1)
F1= =C1& " " &E1
F1 will give you the format the way you want it. You can then hide cols ABCD&E.
I'm sure there's a better way to do this but this works.
You could also use find and replace. Find "(" and replace with a space. Find ")" and replace with nothing.
by formula you could use
=LEFT(A1,FIND("(",A1)-1)&" "&MID(A1,FIND("(",A1)+1,LEN(A1)-FIND("(",A1)-1)
assuming your needing for cell a1.
good luck
Here's another formula to split
If your original data is in a1, then in b1 type
=left(a1,find("(",a1)-1)
In c1 type
=mid(a1,find("(",a1)+1,4)
if the text between parentheses is always 5 characters
if the length of text between parentheses varies, try typing the following into c1
=MID(A1,FIND("(",A1)+1,FIND(")",A1)-FIND("(",A1)-1)
Lots of ways to do this, hope this one helped