Using O=C1NC(=O)c2ccccc21, CC(C)C(C(=O)O)N1CCCN(CCCCl)C1=O to produce CC(C)C(C(=O)O)N1CCCN(CCCN2C(=O)c3ccccc3C2=O)C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.