Using Cc1csc(Nc2cc(OC3CCCN(C(=O)OC(C)(C)C)C3)ccn2)n1 to produce Cc1csc(Nc2cc(OC3CCCNC3)ccn2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.