You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(1R,2R,3R,6R,7S,8S,9R,10R,16S,18R)-3-ethyl-2-hydroxy-7-[(2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyloxan-2-yl]oxy-9-[(2S,3R,4S,6R)-3-hydroxy-6-methyl-4-[methyl-[2-[1-[2-(4-nitrophenyl)ethyl]triazol-4-yl]ethyl]amino]oxan-2-yl]oxy-2,6,8,10,16,18-hexamethyl-13-methylidene-17-nitroso-4,11,15-trioxabicyclo[8.5.4]nonadecan-5-one The above is the IUPAC name of a molecule. Write its molecular formula.
user
C52H82N6O15
assistant