Using CC(C)(C=O)n1cnc(-c2cccnc2)c1, CCOP(=O)(CC(=O)OC)OCC to produce COC(=O)CCC(C)(C)n1cnc(-c2cccnc2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.