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 1-benzyl-3-[3-[(2S,4S,5R,6R)-4-[(4-benzylpiperazin-1-yl)methyl]-6-[4-(hydroxymethyl)phenyl]-5-methyl-1,3-dioxan-2-yl]phenyl]urea .
user
C38H44N4O4
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