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 (2R,3S)-3-amino-2-[[2-(2-cyclopropylethyl)furo[3,2-c]pyridin-4-yl]methyl]-2-hydroxy-4-methylsulfanylbutanoic acid ?
user
C18H24N2O4S
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