You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule tert-butyl N-[(3S,4S,13S,16S,17R)-13-formyl-4-methyl-2,15-dioxo-17-propan-2-yl-5-oxa-1,14-diazabicyclo[14.3.0]nonadecan-3-yl]carbamate ?
user
C26H45N3O6
assistant