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 1-[(S)-cyclopropyl-[4-(trifluoromethyl)phenyl]methyl]-6-hydroxy-3-(2,2,2-trifluoroethyl)-3,3a,5,6,7,7a-hexahydro-2H-pyrazolo[3,4-d]pyrimidin-4-one ?
user
C18H20F6N4O2
assistant