Using CC(C)CN, CCOC(=O)N1CCCC(N2CCC(C(=O)O)CC2)CC1 to produce CCOC(=O)N1CCCC(N2CCC(C(=O)NCC(C)C)CC2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.