1'-Methylspiro(indoline-3,3'-pyrrolidine)oxalate (2:3) 1,2-Dihydro-1'-methylspiro(3H-indole-3,3'-pyrrolidine) oxalate (2:3) 69517-60-8 Spiro(3H-indole-3,3'-pyrrolidine), 1,2-dihydro-1'-methyl-, ethanedioate (2:3) Spiro(indoline-3,3'-pyrrolidine), 1'-methyl-, oxalate (2:3)