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 (3S)-6,7-dimethoxy-3-(4-methoxy-6-methyl-9-phenylsulfanyl-7,8-dihydro-5H-[1,3]dioxolo[4,5-g]isoquinolin-5-yl)-3H-2-benzofuran-1-one ?
user
C28H27NO7S
assistant