Using NCCCN1CCC(Cc2ccccc2)CC1, O=C(O)C1=Cc2cnc3cccc(n23)S1 to produce O=C(NCCCN1CCC(Cc2ccccc2)CC1)C1=Cc2cnc3cccc(n23)S1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.