一共三种化合物，可提供详细合成步骤，每种化合物需要50-100 mg

基本信息：

3,3′-(2,2-difluoro-2H-1l3,3,2l4-dioxaborinine-4,6-diyl)bis(9-ethyl-9H-carbazole)

Chemical Formula: C31H25BF2N2O2
Molecular Weight: 506.3598
m/z: 506.1977 (100.0%), 507.2011 (33.5%), 505.2013 (24.8%), 506.2047 (8.3%), 508.2044 (5.4%), 507.2081 (1.4%)
Elemental Analysis: C, 73.53; H, 4.98; B, 2.13; F, 7.50; N, 5.53; O, 6.32