"You will be miserable until you learn the difference between scalar and list context"

Programming Perl 3rd Ed p69

You almost certainly do not want to do this:

$myhash{$key1}=@value1

as $myhash{$key1} will contain the count of the number of elements in @value1

You will probably want to use references for this:

either:

$myhash{$key1}=\@value1;

or:

$myhash{$key1}=[ qw(abd bcd cde def efg) ];

perldoc perlreftut and perldoc perldsc refer.

As to your question, you may wish to review perldoc  perlfaq4, particularly How do I test whether two arrays or hashes are equal?, for some pointers on where to start.