You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
7-bromo-5-methyl-4-oxo-1-(2-trimethylsilylethoxymethyl)pyrrolo[3,2-c]pyridine-2-carbaldehyde is the IUPAC name of a molecule. Please give its molecular formula.
user
C15H21BrN2O3Si
assistant