I wonder if there is some form of UNAfold or Mfold to have the output dot-bracket, as in

((((((((((................ (((..))) ..............)) ))))))))

or if there is a converter, please contact

Professor, how do I get the secondary structures in this format (dotBracket) Ct2B.pl used the script that you passed?

which file I pass to the script for the structures in these formats?