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 (2S)-2-(2-hydroxypropan-2-yl)-6-(2-methylbut-3-en-2-yl)-3,7-dihydro-2H-furo[3,2-g]chromen-7-ol .
user
C19H24O4
assistant