Using COc1ccc2c(c1)CC(=O)CC2, CC(C)(C)OC(=O)N1CCC(CN)CC1 to produce COc1ccc2c(c1)CC(NCC1CCN(C(=O)OC(C)(C)C)CC1)CC2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.