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![2-(7-Bromo-9,9-dioctyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-[1,3,2]dioxaborolane](https://yunshiji.oss-cn-shenzhen.aliyuncs.com/202407/18/620624-96-6.png "2-(7-Bromo-9,9-dioctyl-9H-fluoren-2-yl)-4,4,5,5-tetramethyl-[1,3,2]dioxaborolane")