1-Acetyl-1'-benzylspiro(indoline-3,3'-pyrrolidine) oxalate 1-Acetyl-1,2-dihydro-1'-phenylmethylspiro(3H-indole-3,3'-pyrrolidine) oxalate 64158-06-1 Spiro(indoline-3,3'-pyrrolidine), 1-acetyl-1'-benzyl-, oxalate