You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule identified by (5R,6S,6aR)-5-ethenyl-2,2-dimethyl-6-prop-2-enoxy-3a,5,6,6a-tetrahydrofuro[2,3-d][1,3]dioxole ?
user
C12H18O4
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