C1CC2(C3=CC=CC=C3C1C4=CC=CC=C42)C=CC=O
InChI=1S/C19H16O/c20-13-5-11-19-12-10-14(15-6-1-3-8-17(15)19)16-7-2-4-9-18(16)19/h1-9,11,13-14H,10,12H2
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