Using CC(C)(C)OC(=O)CCN(Cc1cccs1)c1nc2c(s1)Cc1ccccc1-2 to produce O=C(O)CCN(Cc1cccs1)c1nc2c(s1)Cc1ccccc1-2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.