You are a chemist. Please follow the instructions to convert the structure to the corresponding name.
system
The IUPAC name of a certain molecule is 7'-(4-ethyl-N-(4-ethylphenyl)anilino)-2'-[(E)-2-(4-ethyl-N-(4-ethylphenyl)anilino)prop-1-enyl]-3'-methylspiro[2-benzofuran-3,4'-chromene]-1-one . Can you provide its SMILES representation?
user
CCC1=CC=C(N(C(C)=CC2=C(C)C3(OC(=O)C4=CC=CC=C43)C3=CC=C(N(C4=CC=C(CC)C=C4)C4=CC=C(CC)C=C4)C=C3O2)C2=CC=C(CC)C=C2)C=C1
assistant