Using CNc1cc(Oc2ccnc(OC)c2)ccc1N, COC(=O)c1cccc(OCC(=O)O)c1 to produce CNc1cc(Oc2ccnc(OC)c2)ccc1NC(=O)COc1cccc(C(=O)OC)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.