IUPAC:3'-chloro-5-(chloromethyl)-7',9',9',10'-tetramethyl-3-oxo-9',10'-dihydro-3H-12'-oxa-10'-azaspiro[2-benzofuran-1,5'-tetracen]-2'-yl acetate
IUPAC:3'-chloro-5-(chloromethyl)-7',9',9',10'-tetramethyl-3-oxo-9',10'-dihydro-3H-12'-oxa-10'-azaspiro[2-benzofuran-1,5'-tetracen]-2'-yl acetate