Simply select your drawing, or any part of it and copy it to clipboard. For this, you can use Ctrl+c in versions 18.7 or earlier or select Copy as from Edit menu or Ctrl+D and then MarvinOLE format in 18.8 or higher. The selection can be pasted into any OLE-capable application, like Microsoft Office Family (if OLE support is enabled).
This feature also works in a reversed way: select an embedded Marvin OLE document from your Excel Sheet or Word Document, copy to the clipboard (Ctrl+c), then use the paste function (Ctrl+v) at your MarvinSketch to retrieve the structure.
IF OLE copy does not work for you, please check the followings:
C:\Program Files\Chemaxon\Shared\MarvinOLEfolder to check whether