−SO2H;B1-\mathrm{SO}_{2} \mathrm{H} ; \mathrm{B1}−SO2H;B1
−NH2:100-\mathrm{NH}_{2}: 100−NH2:100
=x;74=x ; 74=x;74
−CH3: None of them -\mathrm{CH}_{3}: \text { None of them }−CH3: None of them
