Using CCCCCC(=O)/C=C/C1CCCC(=O)N1C/C=C\CCCC(=O)OC to produce CCCCCC(=O)CCC1CCCC(=O)N1CCCCCCC(=O)OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.