{"version":"1.0","type":"link","title":"Crown ether - Newikis","description":"A crown ether is a type of organic compound. They are large rings of atoms where oxygen replaces carbon in a repeating pattern. Related compounds that have nitrogen or sulfur as part of the pattern are called aza-crown ethers and thia-crown ethers.","provider_name":"Newikis","provider_url":"https://newikis.com","cache_age":86400,"thumbnail_url":"https://thumb.wikimedia.org/wikipedia/commons/thumb/8/89/18-crown-6.svg/1200px-18-crown-6.svg.png","thumbnail_width":1200,"thumbnail_height":1154}