IF Statement syntax error

I am getting an syntax error on my IF statement for the script below: Error: 1200336 Error compiling formula for ["Market A"] (line 12): [(] without [)]

FIX("Product A")

     "Market A"(IF(@ISMBR("Account A"))

"Market B"*-1;

 ELSE (IF(@ISMBR("Account B"))

"Market C"->"Account B"*"Market A"->"Account A";

ELSE #missing;

ENDIF;

ENDIF;)

   )  

ENDFIX

What am i getting wrong with my brackets and semi colons?