2′,7′-Bis(4-nitrophenoxy)spiro[fluorene-9,9′-xanthene]

2′,7′-bis(4-nitrophenoxy)-spiro(fluorene-9,9′-xanthene)

2′,7′-Bis(4-nitrophenoxy)spiro[fluorene-9,9′-xanthene]

2′,7′-Bis(4-nitrophenoxy)spiro[fluorene-9,9′-xanthene]

2′,7′-Bis(4-nitrophénoxy)spiro[fluorene-9,9′-xanthene]

Spiro[9H-fluorene-9,9′-[9H]xanthene], 2′,7′-bis(4-nitrophenoxy)-