Dataset #%5BC%3A3%5D1%5BCH%3A4%5D%3D%5BCH%3A5%5D%5BC%3A6%5D(%5BCH2%3A9%5D%5BCH2%3A10%5D%5BO%3A11%5D%5BS%3A20%5D(%5BCH3%3A19%5D