You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(2R,3S)-3-[[1-(2-hydroxyethyl)cyclopropyl]methylcarbamoyl]bicyclo[2.2.1]hept-5-ene-2-carboxylic acid The above is the IUPAC name of a molecule. Write its molecular formula.
user
C15H21NO4
assistant