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If you can print it -- check to see if the pdf box is available -- print to pdf is a quick way.

If you want to control the size and quality of the file, you may have to do some file hopping and "save as" the file in a format the final pdf creation app can use.

Do you have a...

File > Publish to PDF.
Click Save.

Edit: Download a copy of the Illustrator trial (if they have one for Mac OS X) and this illcs2ip_coreltoai.pdf
 
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