You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[(2R,3R,5R)-2-[[1-[(2R,3R,5R)-2-ethyl-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-3-yl]triazol-4-yl]methylcarbamoyloxymethyl]-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-3-yl] 4-(methylamino)-4-oxobutanoate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C30H39N9O11
assistant