You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(4-methoxyphenyl)-3-[(2-pyridin-3-yl-[1,2,4]triazolo[1,5-c]quinazolin-5-yl)sulfanyl]pyrrolidine-2,5-dione The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H18N6O3S
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