You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Provide the molecular formula for the IUPAC named substance 1-N,1-N-bis(2-hydroxy-5-methylphenyl)-2-methyl-2-N-(4-methylphenyl)sulfonylpropane-1,1,2-tricarboxamide .
user
C28H31N3O7S
assistant