You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named 1-[4-(1,3-dihydroisoindol-2-yl)-6-methoxypyrimidin-2-yl]-3-(3-methoxypropyl)thiourea is given. What is its corresponding molecular formula?
user
C18H23N5O2S
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