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 1,4-dimethylbenzene-3,6-diide;1,2-dimethylbenzene-5-ide;1,3-dimethylbenzene-5-ide;1,3-dimethylbenzene-6-ide;1,4-dimethylbenzene-6-ide;yttrium .
user
C40H44Y6-6
assistant