Using O=C(CC1(c2ccccc2)CCN(C(=O)OCc2ccccc2)CC1)NCCc1ccccc1F to produce O=C(CC1(c2ccccc2)CCNCC1)NCCc1ccccc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.