This looks like Corchorus aestuans, this differs from C.olitorius (jute) in having 3 beak-like appendages on the top of the liinear capsule, have only one such appendage. The capsule is not discernible in this picture, but probably it can be verified later personally.Ref. Flora of West Bengal, Vol I and Paschimbanger Udvid , Vol II by S.R.Ghosh, both published by BSI.Susmita