You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1,5,9,13-tetrakis[[1-[2-[2-[2-[(2R,3R,4S,5R,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxyethoxy]ethoxy]ethyl]triazol-4-yl]methyl]-1,5,9,13-tetrazacyclohexadecane-2,6,10,14-tetrone is the IUPAC name of a molecule. Please give its molecular formula.
user
C72H120N16O36
assistant