You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[2-ethyl-6-(trifluoromethyl)imidazo[1,2-a]pyridine-3-carbonyl]amino]-3-hydroxybutanoic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H16F3N3O4
assistant