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 methyl 2-[[2-[5-(furan-2-yl)-4-oxo-3-prop-2-enylthieno[2,3-d]pyrimidin-2-yl]sulfanylacetyl]amino]-4,5-dimethylthiophene-3-carboxylate .
user
C23H21N3O5S3
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