First and foremost don't touch it. Second go to a reputable dry cleaner if you can and ask them. Google this subject and you will find thousands of solutions but I cannot tell you which one works because some are truths and some are not

The best way to clean stains from your fabric sofa, upholstery and other things is to ask for professional help from certified staff who can clean these stains efficiently and leave your sofa looking sparkling clean. We always use the cleaning services available at http://www.centralsydneycarpetcleaning.com.au/ for our home.