Using O=C1NC(=O)C2CCCCC12, ClCCCN1CCN(c2ncccn2)CC1 to produce O=C1C2CCCCC2C(=O)N1CCCN1CCN(c2ncccn2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.