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system
What is the SMILES notation for N-(1-naphthalen-2-ylethylidene)-N'-[1-(3-pyridin-3-ylphenyl)ethenyl]-9,9'-spirobi[fluorene]-2-carboximidamide ?
user
C=C(N=C(N=C(C)C1=CC=C2C=CC=CC2=C1)C1=CC=C2C3=CC=CC=C3C3(C4=CC=CC=C4C4=CC=CC=C43)C2=C1)C1=CC=CC(C2=CC=CN=C2)=C1
assistant