You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[3-[[(2S)-2-aminopropyl]-methylamino]-1,2,4-triazin-6-yl]-5-(1H-pyrazol-4-yl)phenol;dihydrochloride is the IUPAC name of a molecule. Please give its molecular formula.
user
C16H21Cl2N7O
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