You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[2-[(2-hydroxyphenyl)methyl-[(2-methylpropan-2-yl)oxymethyl]amino]ethyl-[(2-methylpropan-2-yl)oxymethyl]amino]methyl]phenol is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H40N2O4
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