Using Cc1nc(OCc2c(-c3ccccc3)noc2C)c(Br)cc1C(=O)NC1CCOCC1 to produce Cc1nc(OCc2c(-c3ccccc3)noc2C)ccc1C(=O)NC1CCOCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.