pentacyclo[6.6.6.0~2,7~.0~9,14~.0~15,20~]icosa-2(7),4,9(14),11,15,17,19-heptaene-3,6,10,13-tetrone (non-preferred name)
Product Code: 1753363
Molecular Formula: C20H10O4
Molecular Weight: 314.29

pentacyclo,icosa,heptaene,tetrone,preferred,CASNo 69203-80-1