How To Extract Name & E-Code from the text string when the text string have like [e.g 
John(02457)]
Here you can use the below formula first extract the "
Name" then extract the "
E-Code" from the data table "
Name & E-Code"
Formula:-  To Extract Name                                                                                                
=LEFT(A2,FIND("(",A2)-1)
And  the result will display
  John
Keep the same above formula & you can change the "(" to "{" , "[", "#" or "@" 
 How This Formula Works ?
( i )  =LEFT(A2,FIND("(",A2)-1)
( ii ) =LEFT("John(02457)",FIND("(",A2)-1)
( iii ) =LEFT("John(02457)",FIND("("John(02457)")-1)
( iv ) =LEFT("John(02457)",5-1)    [Result as:  John(0 ]
( v ) =LEFT("John(02457)",4)        [ Then Left function pull out 4 character from Left ]
( vi ) =John          [ Result ]
Formula:-  To Extract E-Code                                                                                         
=RIGHT(A2,LEN(A2)-LEN(B2))
And  the result will display
 (02457)
How This Formula Works ?
( i )   =RIGHT(A2,LEN(A2)-LEN(B2))
( ii ) =RIGHT("John(02457)",LEN(A2)-LEN(B2))
( iii ) =RIGHT("John(02457)",LEN("John(02457)")-LEN(B2)) 
( iv ) =RIGHT("John(02457)",11-LEN(B2))
( v )  =RIGHT("John(02457)",11-LEN("John"))
( vi ) =RIGHT("John(02457)",11-4)
( vii ) =RIGHT("John(02457)",7)       [ Then Right function pull out 7 character from Right ]
( viii ) = (02457)     [Result ]
                                                                    ---0---