[antlr-interest] ambiguous grammar???

[Blue Doze]

Hi,

I have a couple of rules that I don't know how to make them not ambiguous

First rule is:
STRING_LITERAL
    :  '"' ( EscapeSequence | ~('\\'|'"') )* '"'
    ;


The second one is:

math_formula :  '"' expression '"' ;

The expression rule is similar to C expression rule.

Appreciate any help.
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