You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule [(3S,3aR,4S,6S,6aR,7S,8S,9bS)-6-acetyloxy-4-(2-aminoacetyl)oxy-3,3a-dihydroxy-3,6-dimethyl-8-[(Z)-2-methylbut-2-enoyl]oxy-2-oxo-4,5,6a,7,8,9b-hexahydroazuleno[4,5-b]furan-7-yl] octanoate .
user
C31H45NO12
assistant