英文名称
                                        
                                            
bis(1-(3-((ethoxycarbonyl)amino)-4-hydroxyphenyl)-2-((1-(4-methoxyphenyl)propan-2-yl)amino)ethyl) fumarate  (Formoterol Impurity)
                                            
                                        
                                        
                                        
                                     
                                    
                                    
                                        Smiles Code
                                         O=C([O-])/C(C(C1=CC=C(O)C(NC(OCC)=O)=C1)CNC(C)CC2=CC=C(OC)C=C2)=C(C(C3=CC=C(O)C(NC(OCC)=O)=C3)CNC(C)CC4=CC=C(OC)C=C4)/C([O-])=O