You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Convert the IUPAC name of a molecule 1-N-[7-cyano-3,4-dihydroxy-1-(4-hydroxyphenyl)heptan-2-yl]-5-methyl-3-N,3-N-dipropylbenzene-1,3-dicarboxamide into molecular formula.
user
C29H39N3O5
assistant