3, 3′‐[(1RS, 3SR)‐2‐Oxocyclohexane‐1, 3‐diyl]bis[(3RS, 3′SR)‐3‐hydroxyindolin‐2‐one] dihydrate: organic layers of R22(8), R22(16) and R66(40) rings linked by tetrameric water aggregates. (24th September 2013)