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 [2-[[5-[2-chloro-6-(ethylamino)purin-9-yl]oxolan-2-yl]methoxy]-1-ethoxy-1-oxopropan-2-yl]-ethoxyphosphinous acid .
user
C19H29ClN5O6P
assistant