Parsekit equivalent for ABNF construct <any A except B>
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I want to translate a given ABNF grammar into a valid ParseKit grammar. Actually I'm trying to find a solution for this kind of statement:

    tag = 1*<any Symbol except "C">

with

    Symbol = "A" / "B" / "C" / "D" // a lot more symbols here...

The symbol definition is simplified for this question and normally contains a lot of special characters.
My current solution is to hard code all allowed symbols for `tag`, like

    tag = ('A' | 'B' | 'D')+;

But what I really want is something like a "without operator"

    tag = Symbol \ 'C';

Is there any construct that allows me to keep my symbol list and define some excludes?