You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
1-(3,5-dimethylphenyl)-3-[[5-[furan-2-yl(hydroxy)methyl]thiophen-2-yl]methyl]urea is the IUPAC name of a molecule. Please give its molecular formula.
user
C19H20N2O3S
assistant