C1(OC2=CC=C(C=CC=C3)C3=C2)=CC4=CC=CC=C4C=C1
1S/C20H14O/c1-3-7-17-13-19(11-9-15(17)5-1)21-20-12-10-16-6-2-4-8-18(16)14-20/h1-14H
DZRLNYVDCIYXPG-UHFFFAOYSA-N
13 - Non Combustible Solids
WGK 3