You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-[[17-[5-acetyloxy-4-[4-hydroxy-5-[4-hydroxy-5-(5-hydroxy-6-methyloxan-2-yl)oxy-6-methyloxan-2-yl]oxy-6-methyloxan-2-yl]oxy-6-methyloxan-2-yl]oxy-3-formyl-5,23-dihydroxy-8,12,18,20,22-pentamethyl-25,27-dioxo-26-oxapentacyclo[22.2.1.01,6.013,22.016,21]heptacosa-3,7,11,14,23-pentaen-9-yl]oxy]-N-hydroxy-3-(methoxycarbonylamino)-2,4-dimethyloxan-4-amine oxide is the IUPAC name of a molecule. Please give its molecular formula.
user
C67H98N2O25
assistant