You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
13-(6-hydroxy-2,8-dimethylchromen-2-yl)-2,6,10-trimethyltrideca-2,10-diene-6,7-diol The above is the IUPAC name of a molecule. Write its molecular formula.
user
C27H40O4
assistant