Regex select pattern

Question

My requirement is like below :- I have one input file abc.properties having content like:-

CLASSPATH=\modules\oracle.xdk_12.1.3\xmlparserv2.jar

Timestamp connectToServer Start: 2015-10-21 16:03:05.862999 Successfully connected to managed Server "WLS_SOA1" that belongs to domain "soa_domain".

Following 43 composites are currently deployed to the platform:

1. Helloworld[1.0], partition=default, mode=active, state=on, isDefault=true, deployedTime=2015-08-12T21:58:15.289-07:00
2. TimeCall[1.0], partition=default, mode=active, state=on, isDefault=true, deployedTime=2015-09-06T01:36:03.908-07:00
3. StatusProcess[1.0], partition=default, mode=active, state=on, isDefault=true, deployedTime=2015-09-30T17:50:22.108-07:00

....

Output should be :-

Helloworld[1.0]

TimeCall[1.0]

StatusProcess[1.0]