You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
For the molecule named [(1R)-1-ethoxycarbonyloxyethyl] (3R)-3-[[4-(2-acetamidoethyl)-2,2,7-trimethyl-3-oxo-1,4-benzoxazine-6-carbonyl]-propan-2-ylamino]piperidine-1-carboxylate by IUPAC nomenclature, provide its molecular formula.
user
C30H44N4O9
assistant