Using O=C=Nc1ccccc1, CN1C(=O)Cc2cc3c(cc2S1(=O)=O)CCCC3 to produce CN1C(=O)C(C(=O)Nc2ccccc2)c2cc3c(cc2S1(=O)=O)CCCC3, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.