You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
What is the molecular formula of the compound with this IUPAC name 2-[(2S,6R)-4-(2-hydroxyphenyl)-2-thiophen-2-yl-1,2,5,6-tetrahydropyrimidin-6-yl]phenol ?
user
C20H18N2O2S
assistant