Using O=C(Nc1ccccc1)Nc1cccc(-c2ccc(C=C3SC(=O)NC3=O)cc2)c1 to produce O=C(Nc1ccccc1)Nc1cccc(-c2ccc(CC3SC(=O)NC3=O)cc2)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.