It better to go for exchanger get deposit address and deposit your amount of stellar to exchanger.
Follow steps to process :
1) Login to stellar wallet
2) Put deposit address (Tip* Don't forget to mention MEMO)
3) Sell or wait for increase price against BTC
Thanks for the help, I tried to go with that way but I wasn't able to deposit my funds on poloniex exchange using desktop client. I used the proper address and memo id for the transaction but still, the client refused to send the funds. is there any other way?
P.S - I am facing the following issue while sending STR to the poloenix wallet.