1,8-Bis(hydroxymethyl)-9H-fluoren-9-ol
1,8-Bis(hydroxymethyl)-9H-fluoren-9-ol ??
??
1,8-Bis(hydroxymethyl)-9H-fluoren-9-ol C??? ??, ??, ??
1,8-Bis(hydroxymethyl)-9H-fluoren-9-ol ?? ?? ? ???
???
?? ??
1,8-Bis(hydroxymethyl)-9H-fluoren-9-ol ?? ??
???( 0)?? ??