Workflow Build Expression

I need assistance in building a workflow and the expression that I need is pulling from 3 different fields and I am unsure where to remove brackets and add brackets etc.

The fields are Sales Methodology, Sales Stage and Opportunity Owner. The methodology condition has 3 expressions, M-R - Group IBM & Other OR M-R – x86 Hardware OR M-R – Other Products AND Sales Stage = Closed/Won AND owner = Dara Skelcher. Below is the current workflow.

[{Sales Type}] = LookupValue("OCCAM_OPPTY_SALES_TYPE", "M-R - Group IBM & Other") OR [{Sales Type}] = LookupValue("OCCAM_OPPTY_SALES_TYPE", "M-R - Group - HP") OR [{Sales Type}] = LookupValue("OCCAM_OPPTY_SALES_TYPE", "M-R - Other Products") AND [{Sales Stage - Translation}] = "Closed/Won" AND [{Owner Alias}] = "Dara Skelcher"