You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 1-(4-methyl-2-pyridin-3-yl-5-pyridin-4-yl-1H-pyrrol-3-yl)ethanone is given. What is its corresponding molecular formula?
user
C17H15N3O
assistant