((1,3,8,10-Tetraoxo-1,3,8,10-tetrahydroanthra[2,1,9-def:6,5,10-d'e'f']diisoquinoline-2,9-diyl)bis(4,1-phenylene))diboronic acid 1g

((1,3,8,10-Tetraoxo-1,3,8,10-tetrahydroanthra[2,1,9-def:6,5,10-d'e'f']diisoquinoline-2,9-diyl)bis(4,1-phenylene))diboronic acid 1g