You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name (3,4-dimethoxyphenyl)-[(1S)-1-(4-fluorophenyl)-6-methoxy-1,3,4,9-tetrahydropyrido[3,4-b]indol-2-yl]methanone ?
user
C27H25FN2O4
assistant