You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
6-(4-methoxyphenyl)-5-[3-(3-methoxyphenyl)-1,2,4-oxadiazol-5-yl]-4-methyl-3-(4-methylphenyl)-1,6-dihydropyrimidine-2-thione is the IUPAC name of a molecule. Please give its molecular formula.
user
C28H26N4O3S
assistant