Using CCOC(=O)CC1(C(=O)OCC)CCN(CC2CN(c3ccc(C(=N)N)cc3)C(=O)O2)CC1 to produce N=C(N)c1ccc(N2CC(CN3CCC(CC(=O)O)(C(=O)O)CC3)OC2=O)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.