You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3R,10S,13S,16S,19R)-16-[(2S)-butan-2-yl]-3-(2,3-dihydroxypropyl)-10,11,14-trimethyl-13-propan-2-yl-4-oxa-1,8,11,14,17-pentazabicyclo[17.4.0]tricosane-2,5,9,12,15,18-hexone The above is the IUPAC name of a molecule. Write its molecular formula.
user
C30H51N5O9
assistant