Using COc1cc([C@@H]2C[C@H]2C(=O)c2cccc(OCCN)c2)ccc1OCC(=O)O to produce NCCOc1cccc(C(=O)c2ccc3cc(OCC(=O)O)ccc3c2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.