NSPredicate Exact Match with String

I have a NSPredicate like this:

NSPredicate *predicate = [NSPredicate predicateWithFormat:@"entity.name CONTAINS %@", myString];

But that will return anything which contains that string. For example: If my entity.name's where:

text
texttwo
textthree
randomtext

and the myString was text then all of those strings would match. I would like it so that if myString is text it would only return the first object with the name text and if myString was randomtext it would return the fourth object with the name randomtext. I am also looking for it to be case insensitive and that it ignores whitespace