You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 6-(4,5-dibromo-3-chlorothiophen-2-yl)-7-oxa-5-azaspiro[3.4]oct-5-en-8-one .
user
C10H6Br2ClNO2S
assistant