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-[(6aR,8R,9R,9aR)-2,2,4,4-tetra(propan-2-yl)-9-sulfanyl-6a,8,9,9a-tetrahydro-6H-furo[3,2-f][1,3,5,2,4]trioxadisilocin-8-yl]pyrimidine-2,4-dione .
user
C21H38N2O6SSi2
assistant