You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[2-(1H-indole-3-carbonyl)hydrazinyl]-N-(5-methyl-1,2-oxazol-3-yl)butanamide by IUPAC nomenclature, provide its molecular formula.
user
C17H19N5O3
assistant