4,4'-((6E,9Z,15Z,19E)-10,15-bis(3,5-di-tert-butyl-4-hydroxyphenyl)-5H,20H-porphyrin-5,20-diylidene)bis(2,6-di-tert-butylcyclohexa-2,5-dien-1-one)

4-[(10Z,14Z)-10,15-bis(3,5-ditert-butyl-4-hydroxyphenyl)-20-(3,5-ditert-butyl-4-oxocyclohexa-2,5-dien-1-ylidene)-21,22,23,24-tetrahydroporphyrin-5-ylidene]-2,6-ditert-butylcyclohexa-2,5-dien-1-one