Dataset #%5BO%3A19%5D%5BCH%3A20%5D(%5BCH2%3A27%5D%5BCH2%3A28%5D%5BCH2%3A29%5D%5BCH2%3A30%5D%5BCH2%3A31%5D%5BCH2%3A32%5D%5BCH2%3A33%5D%5BCH3%3A34%5D