Using CCN=C=NCCCN(C)C, O=C(O)C1CCC(OCCCN2CCN(c3cccc4sccc34)CC2)CC1 to produce NC(=O)C1CCC(OCCCN2CCN(c3cccc4sccc34)CC2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.