Using COC(=O)Nc1nc2c(OC)ccc(-c3csc(CNC(=O)OC(C)(C)C)n3)c2s1 to produce COC(=O)Nc1nc2c(OC)ccc(-c3csc(CN)n3)c2s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.