can't read?
Bismuth subcarbonate (BiO)2CO3, sometimes written Bi2O2(CO3) is a chemical compound of bismuth containing both oxide and carbonate anions
B 1845 (OTTO) Bismuth carbonate Cas 5892-10-4 - used as a filler in radiopaque catheters. It is also employed in fireworks and to make Dragon's eggs. In addition to this, it is made into nanotube arrays that exhibit antibacterial properties.