Using COc1ccc(C(=O)N2CCN(c3ccc(N)c(C=CC(=O)O)c3)CC2)cc1OC to produce COc1ccc(C(=O)N2CCN(c3ccc(N)c(CCC(=O)O)c3)CC2)cc1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.