3-[(2S,4'R)-7-chloro-2'-hydroxy-4,6-dimethoxy-4'-methyl-3,6'-dioxospiro[1-benzofuran-2,3'-cyclohexene]-1'-yl]-3-(4-hydroxy-3-methoxyphenyl)-N-[2-[(4-methyl-1,3-thiazol-2-yl)amino]-2-oxoethyl]propanamide The above is the IUPAC name of a molecule. Write its molecular formula.