9-[2,4(2,5)-二羧基]苯基-2,3,6,7,12,13,16,17-八氢-1H,5H,11H,15H-呫吨[2,3,4-ij:5,6,7-i'j']二喹嗪-18-内鎓盐

9-[2,4(2,5)-Dicarboxyphenyl]-2,3,6,7,12,13,16,17-octahydro-1H,5H,11H,15H-xantheno[2,3,4-ij:5,6,7-i'j']diquinolizin-18-ium inner salt