Using CN(Cc1ccccc1Sc1ccc2c(ccn2C(=O)OC(C)(C)C)c1)C(=O)OC(C)(C)C to produce CNCc1ccccc1Sc1ccc2[nH]ccc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.