You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
5-amino-3-[(Z)-2-cyano-2-(furan-2-yl)ethenyl]-1-(2-hydroxyethyl)pyrazole-4-carbonitrile is the IUPAC name of a molecule. Please give its molecular formula.
user
C13H11N5O2
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