--I have two Sql Server 2012 tables with data similar to these:
-- Table 1
Declare @Product_Sales Table (Suggested_Products varchar(max) null);
Insert Into @Product_Sales
Values
('({1421,1} OR {1422,2}) AND NOT ({1426,2},({1698,0} OR {1699,1} OR {1700,0})'),
('{1698,0} OR {1699,1} OR {1700,0}')...