Using Cc1ccoc1C(=O)Nc1cccc(Oc2ccnc(-c3cc(C(=O)O)c[nH]3)c2)c1, OCCO to produce Cc1ccoc1C(=O)Nc1cccc(Oc2ccnc(-c3cc(C(=O)OCCO)c[nH]3)c2)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.