dihydro-2'-methylspiro(5H-dibenzo[a,d]cycloheptene-5,1'-is

10,11-DIHYDRO-2''-METHYLSPIRO(5H-DIBENZO(A,D)-CYCLOHEPTENE-5,1''- ISOINDOL)3''ONE

10,11-Dihydro-2'-methylspiro[5H-dibenzo[a,d]cycloheptene-5,1'-[1H]isoindol]-3'(2'H)-one

10,11-dihydro-2'-methylspiro[5H-dibenzo[a,d]cycloheptene-5,1'-[1H]isoindole]-3'(2'H)-one