You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
(7-tert-butyl-5-iodo-1-benzofuran-2-yl)-cyclopenta-2,4-dien-1-ylidenemethanolate;cyclopenta-1,3-diene;iron(2+) The above is the IUPAC name of a molecule. Write its molecular formula.
user
C23H21FeIO2
assistant