Trying to obtain memberof detail from linux ldapsearch command

Trying to obtain memberof detail from linux ldapsearch command

I am trying run an LDAP query from a Linux machine (CentOS 5.8) to a
Windows LDAP server and want to get 'memberof' detail for a user. In this
example, the Domain is cm.loc and the user is admin1@cm.loc. Here is the
ldapsearch syntax I am using. It returns an error. Can someone point me in
the right direction with what the correct syntax should be using
ldapsearch to query for memberof detail for a particular account?
Here is what I am using that returns error; "ldap search ext bad search
filter 7" Where is my syntax wrong?
ldapsearch –x –h 192.168.1.20 –b 'DC=cm,DC=loc' -s base –D 'admin1@cm.loc'
-W '(&(objectCategory=Group)(|(memberOf=group1)(memberOf=group2)…))'
Thank You