You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 2-[[6-[2-(4-anilinophenyl)-1-(pyridin-2-ylsulfonylamino)ethyl]pyridin-2-yl]amino]acetic acid into molecular formula.
user
C26H25N5O4S
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