You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 1-(1-acetylpyrrolidin-3-yl)-3-[5-(2-trimethylsilylethoxymethyl)pyrrolo[2,3-b]pyrazin-2-yl]urea .
user
C19H30N6O3Si
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