5-(2-phthalimidyl-3-methyl butanoylamino)isophthalic acid ,phthalimidyl 苯邻二酰亚胺基,(C6H4)-C(=O)-N-C(=O)-(接到苯环邻位）,基在N上,methyl 甲基,-CH3,butanoyl 丁醇基,-CH2CH2CH2CH2-OH,amino 氨基,H2N-,bu...