You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[18-hydroxy-1,11,13-trimethyl-6-[3-[4-(oxolan-3-yl)morpholin-2-yl]oxypropyl]-5-propan-2-yl-16-oxapentacyclo[9.7.0.02,8.06,8.012,17]octadecan-15-yl]-2-methylpropane-1,2-diol is the IUPAC name of a molecule. Please give its molecular formula.
user
C38H65NO7
assistant