Using C1CC(N2CCCNCC2)C1, O=C(O)C1CN(C(=O)OCc2ccccc2)C1 to produce O=C(OCc1ccccc1)N1CC(C(=O)N2CCCN(C3CCC3)CC2)C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.