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 2-[(1R,2R,3S,5R,6R,7S,8S,9R,10S,11R)-7,11-diiodo-1-pentacyclo[6.3.0.02,6.03,10.05,9]undecanyl]ethyl nitrate ?
user
C13H15I2NO3
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