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 (4S,5R)-18-hydroxy-4,5-dimethyl-3-oxabicyclo[12.4.0]octadeca-1(14),15,17-triene-2,8,9,10-tetrone .
user
C19H22O6
assistant