You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
Please write the molecular formula of the molecule 1-cyclopropyl-6-hydroxy-5-[(5R)-4-methoxy-6-methyl-7,8-dihydro-5H-[1,3]dioxolo[4,5-g]isoquinolin-5-yl]-2-sulfanylidenepyrimidin-4-one .
user
C19H21N3O5S
assistant