You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule N,N-dimethyl-4-[[3-[(2,3,5-trimethoxyphenyl)methyl]quinoxalin-2-yl]methylsulfonyl]benzamide into molecular formula.
user
C28H29N3O6S
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