You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 5-[(5-bromoindol-3-ylidene)methyl]-1-(2,3-dichlorophenyl)-6-hydroxy-2-sulfanylidenepyrimidin-4-one .
user
C19H10BrCl2N3O2S
assistant