You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Can you give the molecular formula of the molecule (2-hydroxy-10,11-dimethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinolin-3-yl) (E)-2-phenylethenesulfonate ?
user
C27H27NO6S
assistant