3',6'-Bis(ethyl-amino)-2-[(2-hydroxy-ethyl)-amino]-2',7'-dimethylspiro-[isoindoline-1,9'-xanthen]-3-one.

3',6'-Bis(ethyl-amino)-2-[(2-hydroxy-ethyl)-amino]-2',7'-dimethylspiro-[isoindoline-1,9'-xanthen]-3-one.