Using CS(=O)(=O)Oc1cc2c(cc1C(=O)CCN1CCC(c3ccccc3)CC1)NC(=O)CC2 to produce O=C1CCc2ccc(C(=O)CCN3CCC(c4ccccc4)CC3)cc2N1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.