Using OB(O)c1ccccc1, COC(=O)CC1CCC(c2ccc(-c3ncc(N)cc3OC)cc2)CC1 to produce COC(=O)CC1CCC(c2ccc(-c3ncc(Nc4ccccc4)cc3OC)cc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.