You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Translate the chemical IUPAC name N-[(1S,5S,6R,7R)-7-cyclopentyl-2-oxabicyclo[3.2.0]heptan-6-yl]-2-([1,2,4]triazolo[4,3-b]pyridazin-6-yloxy)acetamide into its molecular formula.
user
C18H23N5O3
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