You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
N-[(1S,3R)-3-(cyanomethyl)cyclopentyl]-2-(6-fluoro-1-methylindazol-3-yl)-5H-pyrrolo[2,3-b]pyrazine-7-carboxamide;N-[(1S,3R)-3-(cyanomethyl)cyclopentyl]-2-(6-fluoro-1-methylindazol-3-yl)-5-(2-trimethylsilylethoxymethyl)pyrrolo[2,3-b]pyrazine-7-carboxamide is the IUPAC name of a molecule. Please give its molecular formula.
user
C50H54F2N14O3Si
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