You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
butane;ethane;1-methylanthracene;2-methylanthracene;2-methylfuran;2-methylphenanthrene;9-methylphenanthrene;1-methyl-4-phenylbenzene-5-ide;2-methylthiophene;pentane;yttrium The above is the IUPAC name of a molecule. Write its molecular formula.
user
C139H192OSY-2
assistant