You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
3-(2-chloroethyl)-2-oxo-5a,6,7,8,9,9a-hexahydro-1H-pyrido[4,3-d][1,3]diazepine-9-carboxamide The above is the IUPAC name of a molecule. Write its molecular formula.
user
C11H17ClN4O2
assistant