You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-[2-(furan-2-yl)ethyl]-2-[[4-methyl-2-(oxolan-3-yloxy)phenyl]methyl]-3-(oxan-2-ylmethyl)guanidine is the IUPAC name of a molecule. Please give its molecular formula.
user
C25H35N3O4
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