You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule 7-(3-fluorophenyl)sulfonyl-N-(furan-2-ylmethyl)-1-oxa-2,7-diazaspiro[4.4]non-2-ene-3-carboxamide ?
user
C18H18FN3O5S
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