You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
[1-(2-ethoxyethyl)cyclopentyl]-[(3R)-3-(5-methyl-1H-1,2,4-triazol-3-yl)piperidin-1-yl]methanone is the IUPAC name of a molecule. Please give its molecular formula.
user
C18H30N4O2
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