Use of uninitialized value in join or string at check_22nov_metabolite_pred_2.pl line 74, <DATA> line 6.
M7:   M7<-Q, P.
Use of uninitialized value in join or string at check_22nov_metabolite_pred_2.pl line 74, <DATA> line 6.
M54:  M54<-M7<-Q, Pl.P.