Using O=C1CCC(C(=O)N2CCNCC2)N1, O=C(CCl)N1CCOCC1 to produce O=C1CCC(C(=O)N2CCN(CC(=O)N3CCOCC3)CC2)N1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.