CC(C)=CCC/C(C)=C/CC/C(C)=C/CC/C(C=O)=C\C=C\C(C=O)=C\N (2E,4E,6Z)-6-(aminomethylidene)-2-[(3E,7E)-4,8,12-trimethyltrideca-3,7,11-trienyl]hepta-2,4-dienedial