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 [2,14,15,16-tetraacetyloxy-3-hydroxy-9-(methoxymethyl)-4,13-dimethyl-5-oxospiro[6-oxatricyclo[11.4.0.03,7]heptadeca-8,10-diene-17,2'-oxirane]-12-yl] acetate .
user
C31H40O15
assistant