You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(3aS,6R,6aS)-6-(1,4-dioxaspiro[4.5]decan-3-yl)spiro[3a,4,6,6a-tetrahydrofuro[3,4-d][1,3]dioxole-2,1'-cyclohexane]-4-ol is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H28O6
assistant