Using NCCCNc1nsc2nccnc12, COc1ccc(-c2ccc(C=O)cc2)cc1 to produce COc1ccc(-c2ccc(CNCCCNc3nsc4nccnc34)cc2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.