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-[4-[6-chloro-8-[(5-chloro-6-fluoro-1H-indazol-4-yl)oxy]-2-[(3S,4R)-1,4-dimethylpyrrolidin-3-yl]oxypyrido[3,4-d]pyrimidin-4-yl]piperazin-1-yl]prop-2-en-1-one .
user
C27H27Cl2FN8O3
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