You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
O-phenyl (6aR,8R,9R,9aR)-8-[(5aR)-4-phenylmethoxy-5a,6-dihydroimidazo[2,1-b]purin-1-yl]-9-hydroxy-2,2,4,4-tetra(propan-2-yl)-6,6a,8,9a-tetrahydrofuro[3,2-f][1,3,5,2,4]trioxadisilocine-9-carbothioate The above is the IUPAC name of a molecule. Write its molecular formula.
user
C38H51N5O7SSi2
assistant