Using COc1ccc(CN2CCc3c(sc(N)c3C(=O)OC(C)(C)C)C2CN2C(=O)c3ccccc3C2=O)cc1 to produce COc1ccc(CN2CCc3c(sc(N)c3C(=O)OC(C)(C)C)C2CN)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.