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 7-[(2R,3R,4S,5R)-5-[1-[dimethyl(methylidene)-lambda5-phosphanyl]propan-2-yl]-3,4-dihydroxyoxolan-2-yl]-2-methyl-1H-pyrrolo[2,3-d]pyrimidine-4-thione .
user
C17H26N3O3PS
assistant