Using CN1CCNCC1, CS(=O)(=O)OCc1ccc2c(c1)CN(C(=O)OCc1ccccc1)C2 to produce CN1CCN(Cc2ccc3c(c2)CN(C(=O)OCc2ccccc2)C3)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.