Error in script

can somebody help me with this A/S, it’s an old script that i found on flashkit, I get an error everytime a do a preview this

Error Scene=Scene 1, layer=Layer 4, frame=1:Line 4: ‘)’ or ‘,’ expected
duplicateMovieClip ("/dna1", “dna” add (i), i);

Error Scene=Scene 1, layer=Layer 4, frame=1:Line 5: ‘)’ or ‘,’ expected
setProperty ("/dna" add i, _rotation, getProperty("/dna" add (i-1), _rotation)+11);

Error Scene=Scene 1, layer=Layer 4, frame=2:Line 4: ‘)’ or ‘,’ expected
setProperty ("/dna" add i, _rotation, getPropert, “/dna” add i, _rotation) + 5);

Total ActionScript Errors: 3 Reported Errors: 3