You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name (E)-3-[(3aR,5S,7aR)-3a,4,5,6,7,7a-hexahydro-1,3-benzodioxol-5-yl]-2-(4-nitrocyclohexyl)prop-2-enenitrile ?
user
C16H22N2O4
assistant