[=6,6'-methylene-bis(2,2,4-trimethyl-1,2-dihydroquinoline)]6,6 '-甲撑-双(2,2,4-三甲基-1,2-双氢喹啉),6,6 '-亚甲基-双(2,2,4-三甲基-1,2-双氢喹啉)