You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-[4-(furan-2-carbonyl)piperazin-1-yl]-2-[1-(2-morpholin-4-yl-2-oxoethyl)indol-3-yl]ethane-1,2-dione into molecular formula.
user
C25H26N4O6
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