You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named 2-[3-[(4-hydroxy-2-methylphenyl)diazenyl]-8-methylimidazo[1,2-a]pyridin-2-yl]acetic acid by IUPAC nomenclature, provide its molecular formula.
user
C17H16N4O3
assistant