Using O=C1CCC(=O)N(CCCCN2C[C@@H]3CN(C(=O)OCc4ccccc4)C[C@@H]32)c2ccccc21 to produce O=C1CCC(=O)N(CCCCN2C[C@H]3CNC[C@@H]32)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.