Using c1nnc(C2CC2)o1, CCC(C=O)NC(=O)OC(C)(C)C to produce CCC(NC(=O)OC(C)(C)C)C(O)c1nnc(C2CC2)o1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.