Using CCn1c(=O)n(-c2ccc3c(c2)CCN3C(=O)OC(C)(C)C)c2ncccc21 to produce CCn1c(=O)n(-c2ccc3c(c2)CCN3)c2ncccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.