Using CCCCCCCCCCCCCCC(O)CO, O=C1CC(c2ccccc2)NC(c2ccccc2)C1 to produce CCCCCCCCCCCCCCC1COC2(CC(c3ccccc3)NC(c3ccccc3)C2)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.