Using O=Cc1ccc(O)cc1, N=C(N)N1CCC(CCC(=O)O)CC1 to produce N=C(N)N1CCC(CCC(=O)Oc2ccc(C=O)cc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.