英文名称
3,4-dimethyl-1-[4-[(4-methylphenyl)-(6-oxobenzo[c][2,1]benzoxaphosphinin-6-yl)methyl]phenyl]pyrrolidine-2,5-dione;N-methyl-N'-[4-[(4-methylphenyl)-(6-oxobenzo[c][2,1]benzoxaphosphinin-6-yl)methyl]phenyl]propanediamide;1,3,4-trimethylpyrrolidine-2,5-dione