You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Under IUPAC nomenclature, a molecule named (2E)-2-[2-[2-[4-(dimethylamino)-2-methoxyphenyl]ethenyl]-6-methylthiopyran-4-ylidene]-3H-inden-1-one is given. What is its corresponding molecular formula?
user
C26H25NO2S
assistant