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 (1R,9S,12R,13R,14S,17R,18Z,21S,23S,24R,25S,27R)-17-ethyl-1,14-dihydroxy-12-[1-[(3R,4R)-4-hydroxy-3-methoxycyclohexyl]propan-2-yl]-23,25-dimethoxy-9,13,19,21,27-pentamethyl-11,28-dioxa-4-azatricyclo[22.3.1.04,9]octacos-18-ene-2,3,10,16-tetrone .
user
C44H73NO12
assistant