Using CCC=O, COc1cc(N2CCNCC2)c(C2CC(C)(C)CC(C)(C)C2)cc1N1CCCCC1 to produce CCCN1CCN(c2cc(OC)c(N3CCCCC3)cc2C2CC(C)(C)CC(C)(C)C2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.