C:\chas_sandbox>copy con "My Echo.pl"
print "hello, world\n";
^Z
        1 file(s) copied.

C:\chas_sandbox>copy con "My Echo (v1).pl"
print "hello, world\n";
^Z
        1 file(s) copied.

C:\chas_sandbox>"My Echo (v1).pl"
hello, world

C:\chas_sandbox>"My Echo.pl"
hello, world

C:\chas_sandbox>perl -e "print STDERR `"My Echo.pl"`;"
Can't find string terminator "`" anywhere before EOF at -e line 1.

C:\chas_sandbox>perl -e "print STDERR `"""My Echo.pl"""`;"
hello, world

C:\chas_sandbox>perl -e "print STDERR `"My Echo (v1).pl"`;"
Can't find string terminator "`" anywhere before EOF at -e line 1.

C:\chas_sandbox>perl -e "print STDERR `"""My Echo (v1).pl"""`;"
'My' is not recognized as an internal or external command,
operable program or batch file.