Using O=Cc1cccnc1, CCC(=O)N(CC1CCCN(C(=O)OC(C)(C)C)C1)c1ccccc1 to produce CCC(=O)N(CC1CCCN(Cc2cccnc2)C1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.