104853-18-1 2(3H)-Benzoxazolone, 3-((4-hydroxy-4-phenyl-1-piperidinyl)methyl)-6-(4-methoxybenzoyl)- 3-((4-Hydroxy-4-phenyl-1-piperidinyl)methyl)-6-(4-methoxybenzoyl)-2(3H)-benzoxazolone