Google Embed Iframe: How to remove left panel from pdf?

Question

Google

A pdf uploaded to Google.Drive is inserted into the page using the File-Insert pdf-file command.

Here is the code:

<iframe src="https://docs.google.com/file/d/0Bx8sfpk_du4LekU4N0pZZkVsRFU/preview" width="800" height="1200"; frameborder="0"></iframe>

The result is as follows: Question: How can I make sure that the left panel (with sheets) is not shown when the page is opened by default? Can't find it anywhere in the settings. ps Recommendations to copy text in html, etc. - unsuitable. You need a pdf.