for /f "" %%i in ('echo (123) ^| sed -R"s/^.+([\w -]+).+/\1/"') do (
	set a=%%i
)
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for /f "" %%i in ('echo "(123)" ^| sed -r "s/^.+([\w -]+).+/\1/"') do set a=%%i
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sed -r "s/\"([\w ]+).+/\1/"'
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for /f "delims=" %%i in ('echo "PDF Shaper(PDF工具箱)" ^| sed -r "s/\b*([\w ]+).+/\1/"') do echo %%i
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for /f "delims=" %%i in ('echo "PDF Shaper(PDF工具箱)" ^| sed -r "s/.([a-zA-Z ]+).+/\1/"') do echo (%%i)
for /f "delims=" %%i in ('echo "PDF Shaper(PDF工具箱)" ^| sed -r "s/([a-zA-Z ]+).+/\1/"') do echo {%%~i}
for /f "delims=" %%i in ('echo "PDF Shaper(PDF工具箱)" ^| sed -r "s/((\w ?)+).+/\1/"') do echo [%%~i]
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