You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the molecule 2-[[5-(2,3,3a,4,5,6,7,7a-octahydro-1H-inden-1-yl)-2-(ethylphosphanylmethyl)oxolan-3-yl]phosphanylmethyl]-5-cyclohexyloxolan-3-ol ?
user
C27H48O3P2
assistant