You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
2-[[6-amino-2-[[2-(2,6-diaminohexanoylamino)-3-(4-hydroxyphenyl)propanoyl]amino]hexanoyl]amino]-3-methylbutanoic acid is the IUPAC name of a molecule. Please give its molecular formula.
user
C26H44N6O6
assistant