Using CCOC(=O)CBr, O=C(OCC1(O)CCCc2c(O)cccc2C1O)N(c1ccccc1)c1ccccc1 to produce CCOC(=O)COc1cccc2c1CCCC(O)(COC(=O)N(c1ccccc1)c1ccccc1)C2O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.