I cannot open a docx file XML parsing error: document.xml, Line: 2, Column: 86534

I have tried everything but could not solve it. The document is 27 pages long. I couldn´t recover the file with Office tools. With FreeOffice I recover until page 5 but i need the other pages.

I know this is a common problem and I think it must have a solution to recover the entire file, but I don’t know what to do.

¿Can anyone help me?

Thanks!