"streptopyrrole" . . "Streptopyrrole" . . . . . . . . "Streptopyrrole" . . . . . . . . . . . "Streptopyrrole I" . "2-Chloro-6,8-dihydroxy-7-propylpyrrolo[2,1-b][1,3]benzoxazin-9-one" .