1-Pyrrolidineacetamide, N,N'-(9-oxo-9H-fluorene-2,7-diyl)bis- 2,7-Bis((pyrrolidino)acetamido)fluoren-9-one 64953-57-7 N,N'-(9-Oxo-9H-fluorene-2,7-diyl)bis-1-pyrrolidineacetamide