Using O=C(OCC[C@H](Cn1ccnc1C(=O)c1cccc2c1CCCC2)c1ccc(Cl)c(Cl)c1)c1cccc2c1CCCC2 to produce O=C(c1cccc2c1CCCC2)c1nccn1C[C@@H](CCO)c1ccc(Cl)c(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.