You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[4,6-bis[(3R)-3-methylpiperidin-1-yl]pyrimidin-2-yl]-3-[(1R)-1-phenylethyl]thiourea The above is the IUPAC name of a molecule. Write its molecular formula.
user
C25H36N6S
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