I'd like to use regular expression using linux command "grep".
Currently I have file which looks like this..

```
X.54(val)(08)(15)(4)
(32)(0.001)(77)(90)
X.54(val)(08)(15)(4)
(33)(0.001)(77)(90)
X.54(val)(08)(15)(4)
(34)(0.001)(77)(90)

```

My goal is using a regex which gives me following result

```
X.54(val)(08)(15)(4)
(32)
X.54(val)(08)(15)(4)
(33)
X.54(val)(08)(15)(4)
(34)

```

Currently I'm using this regex 

```
(^\((.*?)\))

```

which works on <https://regexr.com/> fine but using 
command "grep" or "sed" does not work...

```
sed -e '/(^\((.*?)\))/gm'
grep '/(^\((.*?)\))/gm'

```

Can somebody help me....?

Thanks in advance,
Markus