Using COC(=O)CC(=O)C(C)C, COc1nc(-c2c(C)cccc2C)nc2c1CNCC2 to produce COc1nc(-c2c(C)cccc2C)nc2c1CN(C(=O)CC(=O)C(C)C)CC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.