You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3S,8R)-9-(2H-benzotriazole-5-carbonyl)-16-ethyl-2-oxa-9,16-diazatricyclo[16.4.0.03,8]docosa-1(22),18,20-trien-17-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C28H35N5O3
assistant