1,4-oxaselenane

4,4-四氢吡喃二羧酸二乙酯

(+)-(18-冠醚-6)-2,3,11,12-四甲酰胺

(2R,3R,11R,12R,20R,21R)-N2,N2,N3,N3,N11,N11,N12,N12,N20,N20,N21,N21-dodecamethyl-1,4,7,10,13,16,19,22,25-nonaoxacycloheptacosane-2,3,11,12,20,21-hexacarboxamide

4-甲苯磺酰吗啉