You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(1S,2S,3R,4S,9S,10S,12R,15S)-4,12-diacetyloxy-15-[(2R,3R)-3-(butoxycarbonylamino)-2-hydroxy-3-phenylpropanoyl]oxy-1,9-dihydroxy-10,14,17,17-tetramethyl-11-oxo-6-oxatetracyclo[11.3.1.03,10.04,7]heptadec-13-en-2-yl] benzoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C45H55NO15
assistant