Using COCCNC(=O)c1cnc(CNC(=O)OC(C)(C)C)c2cc(OC)c(OC)cc12 to produce COCCNC(=O)c1cnc(CN)c2cc(OC)c(OC)cc12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.