Using CCn1c2ccccc2c2cc(NC(=O)CCCNC(=O)OC(C)(C)C)ccc21 to produce CCn1c2ccccc2c2cc(NC(=O)CCCN)ccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.