You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance (2R,3S,4R,5R,8R,10R,11R,13S,14R)-2-ethyl-3,4-dihydroxy-13-[(2R,4R,5S,6S)-5-hydroxy-4-methoxy-4,6-dimethyloxan-2-yl]oxy-11-[(2S,3R,4S,6R)-3-hydroxy-6-methyl-4-pyrrolidin-1-yloxan-2-yl]oxy-10-methoxy-3,5,6,8,10,14-hexamethyl-1-oxa-6-azacyclopentadecan-15-one .
user
C40H74N2O12
assistant